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Pacemaker ..................................  607 / 9+
Pacifiers ..................................  606 / 234+
    Design .................................  D24 / 194+
Pack  
    Advancing and feeding sheets from ......  271 / 8.1+
        Pack holders .......................  271 / 145+
    Animal  
        Load attaching means ...............  224 / 905*
    Camera .................................  396 / 360+
    Firearm ................................  42 / 88+
    Forming by receiving sheets ............  271 / 278+
    Jogger .................................  271 / 221+
    Metal foil formation ...................  29 / 17.4+
    Nuclear fuel components ................  376 / 434
    Packet  
        Clasping or holding devices ........  24 / 17 R+
        Inserting binding loops ............  227 / 77
        Making and wrapping ................  53 / 206
        Postal card type ...................  229 / 92.8
    Parachute ..............................  244 / 148
    Saddle .................................  54 / 37.1
Package ....................................  206
    Adhesive ...............................  206 / 813*
    Automatic filling and weighing .........  177 / 52+
    Blister ................................  206 / 461+
    Button eyelet or rivet .................  206 / 348
    Chewing gum ............................  206 / 800*
    Cleaning composition containing ........  510 / 439
        For human skin .....................  510 / 140
        For textile material ...............  510 / 276+
            Multiple doses .................  510 / 293+
            Plural components ..............  510 / 277
            Single dose ....................  510 / 295+
        Liquid composition .................  510 / 406
        Shampoo ............................  510 / 120
    Coins ..................................  206 / .8+
        Card type ..........................  229 / 92.9
        Paper wrapper ......................  229 / 87.2
    Cosmetic article .......................  206 / 823*
    Design .................................  D09
    Emergency packs ........................  206 / 803*
    Fastenings or ties .....................  24 / 16 R+
    Filler for space .......................  206 / 814*
    Finger opening .........................  206 / 815*
    Fire kindling ..........................  44 / 541
    First aid packs ........................  206 / 803*
    Flares .................................  206 / 803*
    Flexible closure, eg sliding ...........  206 / 816*
    Desk top type ..........................  206 / 816*
    Follower ...............................  206 / 817*
    Land vehicle compartment ...............  296 / 37.1+
    Living fungi ferment containing ........  435
    Lubricant containing ...................  508
    Magnet .................................  206 / 818*
    Mail box clips or pockets ..............  232 / 33
    Making .................................  53
    Material ...............................  206 / 819*
    Medicinal content ......................  206 / 828*
    Nail and staple ........................  206 / 338
    Package and article carriers ...........  224
        Sewing machine case ................  312 / 208.6
    Plant ..................................  47 / 84+
    Powder puff ............................  206 / 823*
    Recoil-type retainer ...................  206 / 825*
    Registers operated by ..................  235 / 98 R
    Rubber band ............................  206 / 805*
    Sausage shirred casing .................  206 / 802*
    Separable, strip-like plural items .....  206 / 820*
    Sheet material folding .................  270 / 39.01+
    Special shape ..........................  206 / 822*
    Stacking member ........................  206 / 821*
    Suction cup adjunct ....................  206 / 829*
    Suspension .............................  206 / 806*
    Tamper-proof ...........................  206 / 807*
    Tear apertures for roll, strip, or .....  206 / 824*
    Sheet ..................................  206 / 824*
    Textile yarn or cloth  
        Laundering or cleaning methods .....  8 / 154
        Liquid treating for cleaning .......  68
        Thread finishing ...................  28 / 217+
    Ties ...................................  24 / 16 R+
    Toilet article .........................  206 / 823*
    Towel, packaged ........................  206 / 812*
    Vacuum .................................  206 / 829*
    Water treating agent containing ........  252 / 176
    Waterproof .............................  206 / 811*
    Wound strand ...........................  242 / 159+
        Convolutely wound ..................  242 / 160.1+
    Wrapper ................................  229 / 87.01+
        Gift wrap ..........................  229 / 87.19
    Wrapper, packaging bag .................  D09 / 713
    X-type .................................  206 / 809*
    Zipper, ie receptacle securement .......  206 / 810*
Packaging Methods  
    Automatic or triggered control .........  53 / 52+
    Bags, wrappers, tubes ..................  D09 / 702+
    Baling .................................  100 / 1+
    Binding ................................  100 / 1+
    Cigar and cigarette making .............  131 / 283+
    Closing packages .......................  53 / 285+
    Collar, cuff and bosom making ..........  53 / 117
    Combined ...............................  53 / 117
    Containers .............................  D09 / 414+
    Contents material treating .............  53 / 111 R+
    Depositing articles into ...............  53 / 235+
    Receptacles ............................  53 / 235+
    Electrical devices  
        Assembly to printed ................  29 / 832+
        Circuit board ......................  29 / 832+
        Encapsulating ......................  264 / 272.11
            And joining to terminal ........  29 / 855+
            By shaping of glass ............  65
        Semiconductor barrier layer type  
            Device (in general) ............  438 / 106+
            Light emissive devices .........  438 / 26+
            Photovoltaic cells .............  438 / 64+
        Space discharge device .............  445
    Filling and closing portable ...........  53 / 266.1+
    Receptacles ............................  53 / 266.1+
    Foods ..................................  426 / 392+
        In liquids .........................  426 / 392+
    Group forming into unit ................  53 / 147+
    Needles and pins .......................  227 / 25
    Plug tobacco making combined ...........  131 / 112+
    Receptacle filling & closing ...........  53 / 467+
    Receptacle opening .....................  53 / 381.1+
    Textile strands ........................  28 / 289+
    Wrapping machines ......................  53 / 203+
Packer  
    Well ...................................  166 / 179+
        Closing port .......................  166 / 141
        Handling ...........................  166 / 373+
        Preset .............................  166 / 114
        Preset conduit carried .............  166 / 116
        With expanding anchor ..............  166 / 118+
        With outward pressure means ........  166 / 101
        With passage control ...............  166 / 142+
        With pump or plunger ...............  166 / 106
Packing Method See Stack ...................  229 / 87.01+
    Bags & wrappers ........................  D09 / 702+
    Cartridge ..............................  86 / 47
    Cases and materials  
        Design .............................  D09
        For cartridges .....................  206 / 3
        For chemicals ......................  206 / 524.1+
        For cigars and cigarettes ..........  206 / 242+
        For cycles .........................  217 / 37+
        For metal leaf .....................  206 / 71
        For photographic papers ............  206 / 455
    Cigar bundling .........................  131 / 107
    Dispensing devices .....................  222 / 143
    Felting roll pack ......................  28 / 125+
        Closure with gasket or packing .....  220 / 378+
    Foods ..................................  426 / 392+
    For a joint or juncture  
        Bottle cap .........................  215 / 341+
        Closure ............................  220 / 200+
        Dispenser outlet ...................  222 / 512
        Dispenser outlet ...................  222 / 542
        Generic  
            Dynamic ........................  277 / 300+
            Static .........................  277 / 312+
        Pipe joint .........................  285 / 335+
        Receptacle seam ....................  220 / 681
        Valve ..............................  251 / 356+
    Materials  
        For sensitive plates ...............  206 / 454+
    Molded separator sheets ................  D09 / 456
    Piston .................................  277
        Ring making ........................  29 / 888.07+
        Ring using .........................  277 / 310
    Portable receptacles  
        Bags and sacks .....................  53 / 570+
        Cigarette ..........................  53 / 148+
        Uniform density ....................  141 / 71+
    Receptacle filling & closing ...........  53 / 467+
    Sand founding molds ....................  164 / 37+
    Tobacco plug ...........................  131 / 112+
    Tools ..................................  81 / 8.1
    Weather strips .........................  49 / 475.1+
    Wrappers ...............................  229 / 87.01+
Packs  
    Change for plates and films ............  396 / 517+
    Photographic plate .....................  396 / 517+
Pad  
    Abrasive sheet holding .................  451 / 490+
        Handled ............................  451 / 524+
    Absorbent ..............................  604 / 358
    Body ...................................  2 / 267+
    Button covering ........................  24 / 114
    Cleaning material supply combined ......  401 / 261+
    Closet seat cover ......................  4 / 245.1+
    Desk or typewriter .....................  D19 / 99
    Diaper .................................  604 / 358
    Electrically heated ....................  219 / 528+
    Foot ...................................  36 / 71
    Furniture ..............................  248 / 188.8
    Ground mat .............................  5 / 420
    Hand ...................................  2 / 20
    Harness ................................  54 / 65+
        Design .............................  D30 / 134+
    Horseshoe ..............................  168 / 26+
        Design .............................  D30 / 147+
        Modified shoe ......................  168 / 12+
    Hot pot holders ........................  2 / 20
        Hand manipulable ...................  294 / 25
        Handle type ........................  16 / 435
        Knitted base .......................  66 / 190+
        Lifters ............................  294 / 27.1+
        Of textile material ................  442
    Inking and copying .....................  118 / 264+
        Printing machine having ............  101
    Knee ...................................  2 / 24
    Label pasting ..........................  156
    Ladder foot ............................  182 / 108+
    Lock  
        Shackles ...........................  70 / 53
    Mattress ...............................  5 / 500
    Pedal ..................................  74 / 563
    Receptor  
        Catamenial and diaper ..............  604 / 358+
    Shoe ...................................  36 / 71
        Heel cushioning ....................  36 / 37
    Skirt combined .........................  2 / 215
    Sleeping bag with pad ..................  5 / 413 R
    Stair ..................................  428
        Conforming to tread nose ...........  52 / 179
    Table ..................................  428 / 53+
    Table, cover or casing for .............  428 / 68+
    Table, scuff plate .....................  248 / 346.11
    Table, sectional layer for .............  428 / 44+
    Truss ..................................  128 / 112.1+
Padded  
    Bottle wrapper .........................  229 / 91
    Container with shock protection ........  206 / 521+
    Crate ..................................  217 / 53
Paddle  
    Design .................................  D21 / 731+
    Game (e.g., for table tennis) ..........  473 / 527+
        With tethered projectile ...........  273 / 317+
        For practice .......................  473 / 463
    Holder (design) ........................  D06 / 552
Paddle and Paddle Wheel ....................  416 / 78+
    Aircraft propulsion ....................  244 / 70+
    Aircraft sustension  
        Heavier than air ...................  244 / 4 R+
        Lighter than air ...................  244 / 27+
    Boat propulsion manual .................  440 / 21
    Design .................................  D12 / 306
    Pumps ..................................  417 / 436
    Ship and boat propulsion ...............  440 / 90+
        Retractable blades .................  440 / 92+
    Ship steering ..........................  114 / 147+
    Ships ..................................  114 / 58
    Water motors ...........................  416 / 78
Padlocks ...................................  70 / 20+
    Condition indicator combined  
        Recorder ...........................  70 / 435
        Register ...........................  70 / 437
    Design .................................  D08 / 334+
    Latch combined .........................  292
        Design .............................  D08 / 334+
Pail (See Bucket; Receptacle)  
    Milk ...................................  220 / 9.1
        Making .............................  413 / 69+
        With strainer ......................  210 / 464+
    Scrub ..................................  15 / 264
    Winding material on (reinforcing) ......  242 / 438
Paint ......................................  106
    Anticorrosive ..........................  106 / 14.05+
    Antifouling ............................  106 / 15.05+
    Artists box ............................  206 / 1.7
    Brushes ................................  15 / 159.1+
        Design .............................  D04
        Material supply combined ...........  401 / 268+
    Drier ..................................  106 / 310
    Luminous  
        Inorganic ..........................  252 / 301.6 R
        Organic ............................  252 / 301.16
        Radioactive ........................  252 / 625+
        Signs ..............................  40 / 542
    Mill ...................................  241
    Mixer ..................................  366 / 605*
    Painters equipment  
        Artists boxes ......................  206 / 1.7+
        Brushes ............................  15 / 159.1+
            Design .........................  D04
            Graining tool ..................  D08
            Roller type ....................  D04 / 122+
        Easels .............................  248 / 441.1+
        Fabric stretching frames ...........  160 / 374.1
        Stencils see stencil  
        Teaching ...........................  434 / 84
    Removing ...............................  134 / 38
    Removing-burning tool ..................  D08 / 29.1
    Roller tray ............................  D32 / 53.1
    Rollers & trays for ....................  D04 / 122+
    Scraper ................................  D32 / 46+
Pajamas ....................................  2 / 83
    Design .................................  D02 / 718+
Palladium (See Platinum)  
    Alloys .................................  420 / 463
Pallet See Pawl  
    Bed clothing ...........................  5 / 482
    Container with .........................  206 / 386
    Dental mixing slab .....................  433 / 49
    Hawk ...................................  294 / 3.5
    Horological drive ......................  368 / 131
    Mold ...................................  425 / 253+
        Concrete or ceramic type ...........  425 / 253
    Organ valve ............................  84 / 368
    Synthetic plastic industrial ...........  108 / 901+
    Platform ...............................  108 / 901*
        Made with deformable integral ......  108 / 902+
        Fastening elements .................  108 / 902*
    Type for lift trucks ...................  108 / 51.11+
Palmitic Acid ..............................  554 / 1+
Pamphlet  
    Covering ...............................  412 / 4+
    Distribution from aircraft .............  40 / 216
Pan See Pot  
    Ash  
        Boiler feed preheater combined .....  122 / 413
        Furnace ............................  110 / 166+
        Stove ..............................  126 / 243+
    Bed ....................................  4 / 450+
    Boiler .................................  122 / 394
        In steam space .....................  122 / 435+
        With blowoff .......................  122 / 386
    Carbonless .............................  503 / 200+
    Closet bowl combined ...................  4 / 429+
    Closet bowl valve ......................  4 / 442+
    Cooking container ......................  D07 / 354+
    Drip see drip pan  
    Drying .................................  34 / 237+
        Housed or supported ................  34 / 192+
    Dust ...................................  15 / 257.1+
    Evaporating and concentrating  
        Closed .............................  159 / 22+
        Combined open and closed ...........  159 / 21
        Open ...............................  159 / 32+
    Land vehicle drip ......................  296 / 38
    Liquid fuel burner .....................  431 / 331+
    Lubricator drip catching ...............  184 / 106
    Mill ...................................  241 / 107+
    Motor vehicle splash ...................  180 / 69.1
    Open top liquid heating vessel .........  126 / 373.1+
    Pan shaped metal bending dies ..........  72 / 394+
    Railway tender coal feed ...............  105 / 235
    Scale ..................................  177 / 262+
    Stove drip .............................  126 / 51
    Street sweeper elevator ................  15 / 85
Pancake  
    Fryer ..................................  99 / 422+
    Turner .................................  294 / 7+
Pancreas Extracts ..........................  530 / 845*
    Medicine containing ....................  424 / 556+
Pane, Window (See Panel)  
    Fasteners ..............................  52 / 764+
    Hermetically sealed ....................  428 / 34
    Laminated glass ........................  428 / 426+
    Parallel panes .........................  52 / 204.593+
        Drier ..............................  52 / 171.3+
        Resiliently spaced .................  52 / 204.593
        Vented .............................  52 / 209+
    Ventilated .............................  454 / 212
Panel  
    Bed ....................................  5 / 280
    Board switchboards .....................  361 / 627+
        Telephone ..........................  335 / 108+
    Building components (see block) .......  52
        Adhered tile .......................  52 / 390+
        Attached handle ....................  52 / 125.2+
        Corrugated component ...............  52 / 783.11+
        Dimpled ............................  52 / 789.1
        Edged laminated ....................  52 / 782.2+
        Edged laminated and separate .......  52 / 800.1+
        Edged resilient ....................  52 / 393
        Edgewise connected .................  52 / 578+
        Embossed ...........................  52 / 789.1
        Hollow .............................  52 / 783.1+
        Integral reinforced ................  52 / 630
        Internal fastener received .........  52 / 787.1+
        Multicellular core .................  52 / 793.1+
        Ornamental .........................  52 / 311.1+
        Partition ..........................  52 / 238.1+
        Perforate sheet ....................  52 / 791.1
        Perforate sheet edging .............  52 / 799.1+
        Separate ...........................  52 / 799.1+
        Sandwich type ......................  52 / 783.1+
        Shaft attached .....................  52 / 474+
        Shield .............................  52 / 202+
        Stonelike ..........................  52 / 596+
        Sub-structure attached .............  52 / 235+
    Casket sliding panel ...................  27 / 15
    Closure fastener operator ..............  292 / 93
    Decorative sectional layer .............  428 / 44+
    Decorative sheet cover or casing .......  428 / 68+
    Disc ...................................  428 / 64.1+
    Edge lighted ...........................  362 / 601
    Fasteners ..............................  24 / 573.09
    Fences .................................  256 / 24+
        Panel element ......................  256 / 73
    Flexible ...............................  160
    For floor,wall,roof ....................  D25 / 138+
    Hangers ................................  16 / 87 R+
    Heat exchanger .........................  165 / 168+
    Heating stove ..........................  126 / 64
        Door transparent ...................  126 / 200
    Joints, readily disengageable ..........  403 / DIG 10
    Mirror with backing ....................  52 / 785.1+
    Mounting for instrument ................  248 / 27.1+
    Movable or removable closures ..........  49
    Partitions &,flexible & portable .......  160
    Phonograph blanks ......................  428 / 64.2+
    Portable ...............................  160 / 351
    Radiant heating wall ...................  165 / 49
    Railway passenger car  
        Convertible open to closed .........  105 / 332+
        End panel open car .................  105 / 347
    Static mold form ......................  249 / 189
    Travelers ..............................  16 / 87 R+
    Wall panel, molding continuous .........  264 / 46.4+
    Windshield .............................  296 / 90
        Sash convertible to screen .........  160 / 128
Panic Bar Latches ..........................  292 / 92+
    With lock ..............................  70 / 92
Panification  
    Processes ..............................  426 / 549+
Panoramic Cameras ..........................  396 / 20+
Pantographic Scribers ......................  33 / 23.01+
    Curved surface .........................  33 / 22
    Cutting machine for shaping ............  409 / 86+
    Multiplane .............................  33 / 24.1
Pantolactone ...............................  549 / 319
Pantothenic Acid ...........................  562 / 569
Pants ......................................  2 / 227+
    Design .................................  D02 / 712+
    Design, lingerie or undergarments  
Pantyhose ..................................  2 / 409+
Papaverine .................................  546 / 149
Paper  
    Article design .........................  D05
    Article making .........................  493
        Computer controlled, monitored .....  700 / 127+
    Bag making .............................  493 / 186+
    Bag opening ............................  493 / 309+
    Bags ...................................  383
    Barrels ................................  229 / 67
    Binder device releasably ...............  402
    Engaging aperture or ...................  402
    Notch of sheet .........................  402
    Blueprint ..............................  430 / 540
    Bobbins and spools .....................  242 / 118+
    Box ....................................  229 / 100+
        Gift wrapped .......................  229 / 923*
    Box making .............................  493 / 52+
    Carbon .................................  428 / 488.11+
        Compositions .......................  106 / 31.29+
        Paper,design .......................  D19 / 1+
    Cartridge shells .......................  86 / 11+
    Clip or clamp fasteners ................  D19 / 65
    Clips ..................................  24 / 455+
    Coating ................................  427 / 411+
        Stripping or edging ................  427 / 284+
    Collars ................................  2 / 136
    Combined into book .....................  D19 / 26+
    Convolute winding machine ..............  242 / 520+
    Cutter .................................  D18 / 34.1+
    Cutter, machine-type ...................  D15 / 127
    Disc closure making ....................  493 / 962*
    Disinfecting or sterilizing ............  422 / 243+
    Driers .................................  34 / 611+
        Processes ..........................  34 / 444+
    Dyeing .................................  8
    Electroprinting ........................  205 / 52
    Envelope making ........................  493 / 186+
    Envelopes ..............................  229 / 68.1+
    Fasteners ..............................  24 / 67 R+
        Making .............................  29 / 13
        Penetrating-type ...................  24 / 901*
    Festoon making .........................  493 / 957*
    Flypaper holder ........................  43 / 115
    Flypaper package .......................  206 / 447
    Folding or plaiting ....................  493 / 68+
        Heat seal ..........................  493 / 394+
        Scraps .............................  100 / 914*
        Tag applying .......................  493 / 375+
        Tube making ........................  493 / 269+
    Garland making .........................  493 / 958*
    Hanging ................................  156 / 574
        Design .............................  D05
    Interlocked sheets .....................  493 / 390
    Lined metal receptacle .................  220 / 495.01+
    Making & fiber liberation ..............  162
        Belts for extended nip press .......  162 / 901*
        Paper forming member ...............  162 / 903*
        Paper pressfelts ...................  162 / 900*
        With specified seam structure ......  162 / 904*
        Woven fabric for drier section .....  162 / 902*
    Matchmaking ............................  144 / 51
    Medicated ..............................  424 / 414+
    Moistener ..............................  134 / 122 R+
    Money sorting ..........................  209 / 534
    Opening reinforcements .................  402 / 79
    Other than in book .....................  D19 / 33
    Package or article carrier .............  224 / 906*
    Parchmentized or linen finish ..........  8 / 119
    Photographic ...........................  430 / 270.1+
    Photographic paper packages ............  206 / 455
    Photoprinting ..........................  430 / 270.1+
    Punch ..................................  D19 / 72
    Punching ...............................  83
    Roll type dispenser packages ...........  206 / 389+
        With severing edge .................  225 / 39+
    Self toning ............................  430 / 559
    Sheet dispensing packages ..............  206 / 449+
        With tearing edge ..................  225 / 27+
    Sheet manipulating devices  
        Flipper, inserter, lifter, .........  402 / 80 R
        Remover, transfer fork .............  402 / 80 R
        Transfer post ......................  402 / 47
    Sheet stock ............................  428
    Shelf paper ............................  D05
    Shifting plate .........................  29 / 270
    Stationery .............................  D19
    Strand twisting or twining .............  57 / 31+
    Stripping photographic .................  430 / 259+
    Tablet .................................  D19 / 26
    Tearing straight edge ..................  225 / 91+
        Gauge ..............................  225 / 91+
    Test papers ............................  435 / 805*
    Testing  
        Bursting or rupture ................  73 / 838+
        Carbon paper .......................  73 / 12.03
        Flexure ............................  73 / 849+
        Pulp freeness ......................  73 / 53.03+
        Sheet material .....................  73 / 159
    Towel dispensing cabinets  
        Sheet type .........................  312 / 50+
        Strip type .........................  312 / 34.8+
        With strip- tearing edge ...........  225
    Towels .................................  162 / 100+
    Twine and strands ......................  57 / 260+
    Twisting and twining apparatus .........  57 / 31+
        Methods ............................  57 / 31+
        Typewriter feeding .................  400 / 578+
    Web winding and unwinding machines .....  242 / 520+
        Design .............................  D19 / 96+
        Weights ............................  16 / 403
    Working and feeding  
        Article manufacturing from .........  493
        Sheet or web .......................  493
        Associating or folding sheets ......  270
        Feeding or delivering sheets .......  271
        Sheet cutting and punching .........  83
    Wrappers ...............................  229 / 87.01+
        Gift wrap ..........................  229 / 87.19
    Wrapping ...............................  D05
    Writing ................................  D19 / 1+
Paperweight Design .........................  D19 / 96+
Parabanic Acid .............................  548 / 317.5
Parachutes .................................  244 / 142+
    Amusement drop devices .................  472 / 49
        Roundabout .........................  472 / 2
    Balloon ................................  244 / 32+
    Drop bomb ..............................  102 / 387
    Pyrotechnic device attached ............  102 / 354
        Flare ..............................  102 / 337+
        Rocket .............................  102 / 348
    Toy ....................................  446 / 49+
Paraffin  
    Hydrocarbon ............................  585 / 16+
        Purification .......................  585 / 800+
        Synthesis ..........................  585 / 700+
    Wax ....................................  208 / 20+
        Treatment or recovery ..............  208 / 24+
Paraldehyde (See Metaldehyde)  
Parallel Bars, Gymnastic ...................  482 / 41+
Parallel Distributed Processing  
    Network see neural networks or  
    Array processors  
Parallel Operation of Electric Motors ......  318 / 34+
Parametric & Parametrons ...................  307 / 402
    Amplifier, capacitor ...................  330 / 7
    Amplifier, saturable inductive .........  330 / 8
    Reactor ................................  330 / 8
    Amplifier, solid element wave ..........  330 / 5
    Guide as reactor means .................  330 / 5
    Frequency converter ....................  307 / 424
Paraquinones ...............................  552 / 293+
Parasiticides ..............................  424
    Cleaning composition containing ........  510 / 382
    Fertilizers containing .................  504 / 101+
    Paints containing ......................  106 / 15.05+
    Water purifying agents containing ......  252 / 175
Parasol See Umbrella .......................  135 / 15.1+
Parathion ..................................  558 / 193
    Composition bio affecting ..............  514 / 132
Paravane  
    Torpedo and mine protection ............  114 / 240 A
    Towed ..................................  114 / 242+
Parchmentizing .............................  8 / 118+
    Laminating combined ....................  156 / 76
Paregoric  
    Medicine containing ....................  514 / 282
Parer (See Peeler)  
    Vegetable and fruit ....................  99 / 588+
        Design .............................  D07 / 693
Parimutuel Systems .........................  235
Parison ....................................  428 / 542.8
Parking  
    Garages ................................  414 / 227+
        Electric signal systems ............  340 / 932.2
        Issuing automated tickets  
            With customer profiles .........  705 / 13
            With smart card access .........  705 / 13
            With theft prevention ..........  705 / 13
            Using a radio card .............  705 / 13
    Land vehicle ...........................  280 / 761
    Lights .................................  362 / 540+
    Meters .................................  194
        Design .............................  D10 / 42
        Design, casing .....................  D10 / 42
        Timer elements .....................  368 / 90+
            Automated ......................  705 / 418
        Timer elements .....................  968 / 809+
        With barrier .......................  194 / 900*
    Motor vehicle  
        Driven laterally ...................  180 / 199+
        Programmable, steerable wheels .....  180 / 204
    Theaters ...............................  52 / 6+
Parliamentary Procedure, Teaching ..........  434 / 234
Parlor Organs  
    Combined with pianos ...................  84 / 172
Parquetry ..................................  52 / 315
    Keyed blocks ...........................  52 / 390+
    Sectional layer ........................  428 / 44+
        Wood ...............................  428 / 50
    Tile type ..............................  52 / 384
        Adhesively held ....................  52 / 390
    Wood grain pattern .....................  52 / 313
Parrels ....................................  114 / 96
Particles ..................................  428 / 402+
    Fuel ...................................  44 / 500+
    Metal ..................................  75 / 255+
    Micro capsules .........................  428 / 402.2
Parting Compound ...........................  106 / 38.22+
    Static mold coated with ................  249 / 115
    Utilization glass making ...............  65 / 24+
Partition  
    Bathtub ................................  4 / 514
    Bed ....................................  5 / 513
    Brattices ..............................  454 / 169+
    Building or car  
        Animal stall .......................  119 / 523
        Freight carrier load brace .........  410 / 129+
        Livestock carrying vehicle .........  119 / 412+
        Movable type .......................  52 / 243.1+
        Safety transaction and display .....  109 / 10
        Sleeping car .......................  105 / 323
        Trapping bank type .................  109 / 5
    Clean rooms ............................  454 / 187
    Fences .................................  256
    Flexible ...............................  160
    Luggage ................................  190 / 109+
    Movable or removable closures ..........  49
    Panels &, flexible & portable ..........  160
    Portable ...............................  160 / 351
    Purse ..................................  150 / 112
    Rack ...................................  211 / 184
    Receptacle .............................  220 / 529+
        Clerical implements ................  206 / 371+
        With dividers ......................  206 / 371
    Receptacle file ........................  220 / 529+
Party Favor ................................  D11 / 131
Party Line .................................  379 / 167.01+
    Call system ............................  379 / 179+
        Revertive ..........................  379 / 179
Pass or Identification Card Case ...........  40 / 642.02+
Passenger  
    Aeronautics  
        Accommodations .....................  244 / 118.5
        Loading or discharging .............  244 / 137.2
        Safety lowering compartment ........  244 / 140+
    Railway  
        Car ................................  105 / 329.1+
        Car framing and structure ..........  105 / 397+
        Jumper amusement park ..............  104 / 82
        Station signals ....................  246 / 209
        Terminals and stations .............  104 / 28
        Transfer moving train ..............  104 / 20+
    Recorder ...............................  346
        Seat depression ....................  346 / 40
Passivate ..................................  148 / 253+
Pasta ......................................  D01 / 126
Paste (See Art Use Classes) ...............  516 / 98+
    Mixtures and pasted plates .............  429 / 209+
    For storage batteries ..................  429 / 209+
    Supporting grids for storage ...........  429 / 233+
    Batteries ..............................  429 / 233+
    Tube  
        Collapsible wall ...................  222 / 92+
        Dispenser-holders ..................  248 / 108
        Supports for .......................  248 / 108+
Pasteboard .................................  D19 / 1+
Pastery  
    Brushes ................................  D04
    Inedible decoration ....................  D11 / 184
Pasteurizing ...............................  426 / 521+
    Apparatus ..............................  99 / 467
        Filled receptacle type .............  99 / 359+
        Heating and cooling ................  165 / 66
    Electrolytic apparatus .................  204 / 194+
    Fermentation combined ..................  435
Pasting  
    Coating machines .......................  118
    Collar cuff and bosom making ...........  223 / 3
    Envelope making ........................  493 / 220+
    Paper hanging and label pasting ........  156
Pastry and Confection Making ...............  426
    Brush ..................................  D04
    Cake and pastry making .................  426
    Coating apparatus ......................  118 / 13+
    Confection making ......................  426 / 660+
    Packaging for pastery wedge ............  206 / 551
Patch and Patching (See Repairing)  
    Bullet .................................  86 / 42
    Mechanical repairing ...................  29 / 402.01+
    Pipe repairing .........................  138 / 98+
    Shirt ..................................  2 / 122
    Tire ...................................  152 / 367+
        Valve stem .........................  152 / 430
    Tool for tire repairing ................  81 / 15.5+
    Wire screen ............................  245 / 2
Patent Leather .............................  428 / 473
    Plural coating .........................  427 / 412
    Shoe upper .............................  36 / 45
Patient Carriers  
    Ambulances .............................  296 / 19
        Wheeled stretchers .................  296 / 20
    Body supported .........................  224 / 158+
    Invalid lift and transfer ..............  5 / 81.1 R+
        Field stretcher ....................  5 / 626+
    Turners ................................  5 / 607
Patient Monitoring Computerized ............  600 / 300+
Pattern ....................................  33 / 12+
    Brassiere ..............................  450 / 92
    Corset or girdle .......................  450 / 156
    Fluid flow within nuclear reactor ......  376 / 373
    Footwear ...............................  33 / 5
    Gloves .................................  2 / 169
    Metal founding .........................  164 / 235+
    Metal rolling ..........................  72
    Plates for metal founding ..............  164 / 241+
    Sprinkler ..............................  239 / 97+
    Textile warp ...........................  28 / 184
Pattern Control (See Copying;  
    Facsimile, templet)  
    Braiding machine .......................  87 / 14+
    Calculator .............................  235 / 419+
    Electric lamp system  
        Current or voltage .................  315 / 292
        Plural load systems ................  315 / 316
    Electric switch ........................  200 / 46
    Embroidering machine ...................  112 / 84+
    Expansible chamber motor ...............  91 / 37
    Facsimile signal generated by ..........  358 / 478
    Stylus .................................  358 / 478+
        Synchronization ....................  358 / 424
    Knitting machine .......................  66 / 231+
    Loom ...................................  139
    Metalworking machine  
        Can making .........................  413 / 27+
        Gear making ........................  409 / 1+
        Milling ............................  409 / 79+
        Patterns ...........................  409 / 125+
        Planing ............................  409 / 289+
        Punch selector .....................  234 / 59+
        Rolling ............................  72 / 6.2+
        Spinning ...........................  72 / 81
        Tracers ............................  409 / 126
        Turning ............................  82
        Type casting .......................  199
    Musical instrument .....................  84 / 600+
    Printing machine .......................  101 / 93+
    Punch machine  
        Gang punch .........................  83 / 76.1+
        Punch selector .....................  234 / 59+
    Special sewing machine .................  112 / 470.01+
    Spray with movable deflector ...........  239 / 232
    Sprayer with cam track .................  239 / 236+
    Typesetting machine ....................  276 / 13
    Typewriter .............................  400 / 61+
    Valve actuator .........................  251 / 3
        Welding ............................  228 / 7
    Woodworking machine  
        Coopering ..........................  147 / 27
        Cutting ............................  144 / 236
        Sawing .............................  83 / 789
        Shaping ............................  144 / 137+
        Turning ............................  142
Patty Molds, Briquetting Meat  
    Dynamic apparatus ......................  425
    Methods ................................  426 / 513
    Static apparatus .......................  249
Pavement See Roads .........................  404 / 17+
    Apparatus & processes for making .......  404 / 83+
        Static mold ........................  249 / 2+
    Machinery for making ...................  404 / 83+
    Materials for forming  
        Bituminous .........................  106 / 273.1+
        Concrete ...........................  106 / 638+
    Process for making .....................  404 / 72+
    Street crossing ........................  238 / 9
Pawl (See Ratchet) ........................  74 / 575+
    Actuated (see device actuated)  
    Bolt or nut to substructure lock  
        Locking pawl, bolt or nut ..........  411 / 141
        Carried ............................  411 / 141
        Moveable pawl ......................  411 / 145+
            Bolt or nut carried ............  411 / 114+
            Used with side lock ............  411 / 128
        Ratchet combined ...................  411 / 89
            Pawl carried by washer .........  411 / 138
            Pawl carried movably ...........  411 / 145+
        Resilient pawl with side lock ......  411 / 125+
    Bolt to nut lock and ratchet ...........  411 / 326
        Used with jam nut ..................  411 / 227+
Paying Devices .............................  114 / 224
    Automated ..............................  705 / 16
        Keyboard features ..................  705 / 25
        Tracking inventory .................  705 / 22
        Using debit or credit card .........  705 / 17
        With output features ...............  705 / 24
    Calculating sales tax ..................  705 / 19
        Recording collected tax ............  705 / 19
    Coupon distribution and ................  705 / 14.38
    Redemption, electronic .................  705 / 14.38
    Electronic funds transfer  
        With encryption ....................  705 / 64
            With authentication ............  705 / 67
    For electronic commerce ................  705
        Remote charge determination ........  705 / 77
        Using encrypted data ...............  705 / 77
            Communication between ..........  705 / 79
            Two financial networks .........  705 / 79
            With third party ...............  705 / 78
    Fraud prevention for ...................  705 / 18
    Multiple, interconnected, and/or .......  705 / 21
    Controlled by host .....................  705 / 21
    With electronic funds transfer .........  705 / 17
        To pay bills .......................  705 / 40
Payment (See Paying Devices)  
Pcmcia Card  
    For secure, encrypted transactions .....  705 / 64
        With authentication ................  705 / 67
Pdpn See Neural Networks  
Peach Stoner ...............................  30 / 113.1+
Peanut .....................................  426 / 632+
    Butter .................................  426 / 633
    Oil ....................................  554 / 1+
Pearl Button Making ........................  79 / 6+
Pearl Essence ..............................  544 / 276
Peat .......................................  44 / 490+
    Carbonizing ............................  201 / 25
    Excavator ..............................  37 / 3
    Fertilizers from .......................  71 / 24
    Mineral oil from .......................  208 / 400+
Peavy ......................................  294 / 17
Pebble Mill ................................  241 / 170+
Pectin .....................................  536 / 2
    Fermentative production ................  435 / 275
    Jellies containing .....................  426 / 577+
Pedal ......................................  74 / 560+
    Clavier ................................  84 / DIG 25
    Closure actuator .......................  49 / 263+
    Crank ..................................  74 / 594.4+
        Bearing ............................  384 / 429+
        Bearing antifriction ...............  384 / 458
        Combined ...........................  74 / 594.1+
    Design .................................  D12 / 125
    Hand control combined ..................  74 / 481
    Link and lever system control ..........  74 / 512+
    Music keyboard  
        Auxiliary ..........................  84 / 426
        Chord player .......................  84 / 444
    Piano ..................................  84 / 229+
        Automatic ..........................  84 / 72+
    Reed organ .............................  84 / 353
        Key action .........................  84 / 366
        Wind control .......................  84 / 357+
    Valve actuator .........................  251 / 295
Pedestal  
    Bearing support ........................  384 / 440
        Spring type ........................  248 / 162.1
        Vertically adjustable ..............  248 / 161+
    Horizontal planar surface ..............  108 / 88
        Supporting .........................  108 / 150
    Railway surface track ..................  238 / 109+
    Stand supporting .......................  248 / 158+
        Extension ..........................  108 / 88
Pedicure Implements ........................  D28 / 56
Pedomotors (See Velocipedes) ..............  235 / 105
    Boat ...................................  440 / 21+
Peeler or Parer(See Cutter; Stripper)  
    Corer combined .........................  99 / 542+
    Corer segmenter combined ...............  99 / 545
    Food ...................................  99 / 588
    Fruit & vegetable ......................  99 / 588+
        Design .............................  D07 / 693
    Osier ..................................  144 / 207
    Rossing bark ...........................  144 / 208.1+
    Slicer combined ........................  99 / 592
        Corer combined .....................  99 / 543
    Wire stripper ..........................  81 / 9.4+
Peeling  
    Bark ...................................  144 / 208.1+
    Bark branch ............................  144 / 207
    Fruit and vegetable ....................  99 / 584+
Peen and Peening ...........................  72 / 76
    Shot blasting ..........................  72 / 53
    Thread texturizer ......................  28 / 277
Peepholes ..................................  220 / 662+
    Door mounted ...........................  49 / 171
        Stove ..............................  126 / 200
    Drying apparatus see notes to ..........  34 / 88
    Measuring sight glass plate type .......  73 / 334
    Shield mounted .........................  109 / 58.5
Peg (See Pin)  
    Cutters ................................  12 / 47.1
        Implements .........................  12 / 104.5
    Cutting and driving ....................  227 / 93+
    Indicators .............................  116 / 325+
    Receivers lasts ........................  12 / 140
    Sole fastening means ...................  36 / 24
    String fastener musical ................  84 / 304+
    Tally boards ...........................  235 / 90
    Tent ...................................  135 / 118
    Violin .................................  84 / 304+
Peg-Board Type Article Supports ............  248 / 216.1+
Pelican Hook ...............................  294 / 82.24+
Pellet (See Pills)  
    Depositors .............................  604 / 57+
    Design .................................  D01
        Medicinal ..........................  D24 / 101+
    Hay pellet makers in general ...........  100
    Hypodermic injectors ...................  604 / 187+
    Machine ................................  425 / 222
    Process for food .......................  426 / 512+
    Receptacles for pocket .................  206 / 528+
Pellet .....................................  D22 / 116
Pellicles for Optical Instruments ..........  359 / 629+
Peltier Effect (See Thermocouple)  
Pelts ......................................  69 / 22
    Carroting ..............................  8 / 112
    Chemical or fluid treatment ............  8 / 94.14
    Cleaning elements made of ..............  15 / 235
    Cutting ................................  83
    Dyeing .................................  8 / 404+
    Fiber liberation from ..................  19 / 2+
    Shearing machines ......................  26 / 15 R+
    Stretching frames ......................  38 / 19+
    Treatment ..............................  69 / 23+
Pen  
    Advertizing on .........................  40 / 905*
    Animal .................................  119 / 502+
        Collapsible ........................  119 / 504
        Design .............................  D30 / 108+
        Hog farrowing ......................  119 / 503+
        Portable ...........................  119 / 512
    Box for ................................  206 / 371
    Caps ...................................  401 / 243+
    Cleaners ...............................  15 / 423
        Design .............................  D19 / 98
    Extractors .............................  29 / 808
    Facsimile ..............................  358 / 296+
    Facsimile design .......................  D19 / 41+
    Fountain (see fountain pen) ...........  401
        Filling devices ....................  141 / 21+
        Tattooing ..........................  81 / 9.22
    Holder (see penholders) ...............  15 / 435+
        Design .............................  D19 / 81+
        Inkstand combined ..................  211 / 69.2+
    Light, photoelectric  
        With light conductor ...............  250 / 227.12
    Pill carrier ...........................  206 / 537
    Play ...................................  256 / 25
        With bottom ........................  5 / 99.1
    Points (see penpoints) ................  15 / 435+
    Rack ...................................  211 / 69.1+
        Design .............................  D19 / 81+
    Ruling .................................  401 / 221
        Adjustable gap .....................  401 / 256+
        Adjustable gap fountain ............  401 / 233
    Type flashlight ........................  362 / 118
Penamecillin ...............................  540 / 342
Pencil .....................................  401 / 49+
    Advertizing on .........................  40 / 905*
    Book cover combined ....................  281 / 30
    Box or case ............................  D03 / 206
    Box sectioned ..........................  206 / 371
    Calculator combined ....................  235 / 64
    Calendar combined ......................  40 / 335
    Clip ...................................  D19 / 56
    Compositions ...........................  106 / 31.11+
    Cosmetic eg lipstick or eyebrow ........  401 / 49+
        Shaped .............................  132 / 320
    Indicia carrying .......................  40 / 334+
        Calendar ...........................  40 / 335
    Mechanical .............................  401 / 49+
    Package ................................  206 / 214
    Pocket fastener ........................  24 / 10 R+
        Design .............................  D19 / 56+
    Rack ...................................  211 / 69.1+
    Sharpeners (see pencil sharpener) .....  30 / 451+
        Electric ...........................  144 / 28.1+
        Pencil combined ....................  401 / 50+
    Type electronic tubes ..................  313
    Wood making ............................  144 / 28
Pencil Sharpener ...........................  D19 / 73+
    Implement ..............................  30 / 451+
        Blade ..............................  30 / 165+
        Debris receiver combined ...........  30 / 453+
        Eraser combined ....................  15 / 105.53
        Pencil combined ....................  401 / 50+
        Tool combined ......................  7 / 160+
    Machine ................................  144
        Edge bevelling .....................  144 / 28.2
        Hand manipulable ...................  144 / 28.11
Pendant  
    Earrings ...............................  63 / 13
    Jewelry ................................  D11 / 79+
    Watch pendant gearing ..................  368 / 190+
    Watchcase ..............................  368 / 301+
    Watchcase making .......................  29 / 896.34
Pendulum  
    Clock ..................................  368 / 134+
    Clock ..................................  968*
        Design .............................  D10 / 130
        Electric ...........................  368 / 165+
        Escapement .........................  368 / 134+
    Facsimile synchronization using ........  358 / 415
    Level and plumb ........................  33 / 353+
        Bubble combined ....................  33 / 353
    Lubricator  
        Force feed follower ................  184 / 44
        Force feed pump ....................  184 / 30
        Gravity feed reciprocating .........  184 / 78
        Valve ..............................  184 / 78
        Gravity feed rotatable valve .......  184 / 73
    Mill ...................................  241 / 129+
    Operated changeable exhibitor ..........  40 / 485
    Scale ..................................  177 / 216+
    Testing  
        Dynamometer ........................  73 / 862.381+
        Tensile stress .....................  73 / 836
    Tide or wave motor .....................  60 / 497+
Penetrating (See Punch; Puncturing)  
    Nailing and stapling ...................  227
    Nozzles ................................  239 / 271
    Perforating drilling ...................  83
    Pole climbers ..........................  182 / 221
    Printing by ............................  101 / 3.1+
    Sorting ................................  209 / 688+
    Testing by .............................  73 / 81+
    Typewriter .............................  400 / 135+
Penetration Resistant Stock ................  428 / 911*
Penetrometers ..............................  73 / 54.23
Penholders .................................  15 / 435+
    Desk type for drafting .................  206 / 371
    Indicia carrying .......................  40 / 334+
        Calendar ...........................  40 / 335
    Picture combined .......................  40 / 334+
Penicillamine ..............................  562 / 558
Penicillin F ...............................  540 / 314
Penicillin G ...............................  540 / 342
Penicillin G, in Drug ......................  514 / 199
Penicillin K ...............................  540 / 314
Penicillin N ...............................  540 / 335
Penicillin O ...............................  540 / 314
Penicillin S ...............................  540 / 314
Penicillin V ...............................  540 / 341
Penicillin X ...............................  540 / 342
Penicillins ................................  540 / 304+
    By fermentation ........................  435 / 43
    Medicines containing ...................  514 / 192+
Penmanship Instruction .....................  434 / 162+
Pennant ....................................  116 / 173+
Penpoints ..................................  15 / 435+
    Cleaner ................................  15 / 423
    Extractors or inserters ................  29 / 808
    Ink retainer attached ..................  401 / 252+
    Ink retainer integral ..................  401 / 221
    Ruling .................................  401 / 256+
        Reservoir ..........................  401 / 233
    Stylus ink retaining ...................  401 / 292
    Wiper ..................................  15 / 423
Pentaerythritol ............................  568 / 853
    Nitrated compositions ..................  149 / 93
Pentaerythritol Tetranitrate ...............  558 / 485
    Explosives containing ..................  149 / 93
Pentagrid Heptode Converter ................  313 / 300
Pentanediol ................................  568 / 853
Pentode  
    Amplifier ..............................  313 / 300
    Cutoff .................................  313 / 300+
    Diode ..................................  313 / 298
        With two cathodes ..................  313 / 5
    Diode triode ...........................  313 / 298
    Tube structure .........................  313 / 297+
    Video ..................................  313 / 300
Pepper  
    Design,shaker or mill ..................  D07 / 591+
    Hand mill ..............................  241 / 168+
    Shaker .................................  222 / 142.1+
Peptide Synthesis ..........................  530 / 333
Peptides ...................................  530 / 300
    Production by fermentation .............  435 / 68.1+
        Including recombinant dna ..........  435 / 69.1+
        Technique ..........................  435 / 69.1+
        Including tissue culture use .......  435 / 70.1+
Per Acids ..................................  562 / 1+
    Electrolytic production ................  205 / 473+
Perambulator See Baby Carriage .............  280 / 47.38+
    Convertible to walker ..................  280 / 7.1+
    Springs ................................  267 / 5
Perborate Esters ...........................  560 / 305
Perborates .................................  423
    Electrolytic production ................  205 / 469
PERBUNAN™    (See Synthetic Resin or  
    Natural rubber)  
Percale ....................................  139 / 426 R
Percarbonates ..............................  423 / 419.1
Percarboxylate Esters ......................  560 / 302
Perch for Fowl .............................  119 / 531+
    Antivermin .............................  119 / 532
    Design .................................  D30 / 119+
Perchlorates ...............................  423 / 476
    Compositions  
        Chemical agent type ................  252 / 186.1+
        Cleaning or detergent ..............  510 / 379
        Explosive ..........................  149 / 42
        Explosive ..........................  149 / 75+
Percolator Beverage ........................  99 / 307+
    Electrically heated ....................  219 / 438+
        Stand combined .....................  219 / 429+
    Pitcher type ...........................  222
    Pumps ..................................  417 / 208+
    Strainer ...............................  210 / 473+
    Top transparent ........................  220 / 377.1
Percussion  
    Electric weld ..........................  219 / 95+
    Musical instruments ....................  D17 / 22+
Percussive  
    Appliance kinestherapy .................  601 / 107+
    Fuses ..................................  102 / 272+
    Signs ..................................  40 / 579
Perdnisolone, in Drug ......................  514 / 179
Perforating (See Penetrating; Punch)  
    By chemical dissolution ................  216 / 56
    Devices  
        Cigars .............................  131 / 253+
        Design .............................  D19 / 72+
        Earthenware multitubular pipe ......  425 / 290+
        Electric heater ....................  219 / 229+
        Fountain pen combined ..............  81 / 9.22
        Glass ..............................  65 / 166
        Inker combined, eg tattooer ........  81 / 9.22
        Plastic block expressing and .......  425 / 290+
        Sheets or bars .....................  83
        Well tubing in situ ................  166 / 55
        With glass mfg means ...............  65 / 166
    Electric discharge .....................  219 / 384
        Recorder ...........................  347 / 159+
    Handling perforated article ............  414 / 908*
    Metal ..................................  83
        Billet piercing ....................  72 / 345
        Expanded ...........................  29 / 6.1
        Multiperforated making .............  29 / 6.01+
    Perforated devices  
        Control members see type  
            Cards ..........................  235 / 487
            Musical instrument .............  84 / 161+
            Tape ...........................  178 / 112
            Typewriter tape ................  400 / 73+
        Drive device for tool ..............  173 / 90+
    Recording printing or typing  
        Printing ...........................  101 / 3.1+
        Recorder ...........................  346 / 78+
        Telegraph code recorder ............  178 / 92
        Typewriter .........................  400 / 80+
    Telegraph code tape  
        By telegraph signals ...............  178 / 70 R
        Selective, by keyboard .............  234
    Tobacco products .......................  131 / 253+
Performance Analysis  
    Business operation .....................  705 / 7.38+
    With electric spark or arc .............  219 / 384
Perfume Compositions .......................  512
    Design .................................  D28 / 5+
    Encapsulated ...........................  512 / 4
    Essential oils .........................  512 / 5
    Fixative for ...........................  512 / 2
    Garment hanger combined ................  223 / 86
    Head coverings with therapeutic ........  2 / 171.2
    Device, medicament or perfume ..........  2 / 171.2
    Perfumed jewelry .......................  63 / DIG 2
    Preserver, stabilizer for ..............  512 / 2
    Solids, gels and shaped bodies .........  512 / 4
Perhalate Esters ...........................  560 / 306
Perhydroxamate Esters ......................  560 / 311
Perhypohalite Esters .......................  560 / 300
Perimidine .................................  544 / 249
    In drug ................................  514 / 269
Period Meter in Nuclear Reactor ............  976 / DIG 243
Periodic Switch  
    Electric circuit makers & breakers .....  200 / 19.01+
        Electromagnetic ....................  335 / 87+
    Electric discharge device supply .......  315 / 209 R+
    Control ................................  315 / 209 R+
Periscopes .................................  359 / 402+
    Compound lens system ...................  359 / 402+
    Submarine combined .....................  114 / 340
    View simulation ........................  434 / 26
Perlite ....................................  501 / 28
    Digest .................................  106 / DIG 2
Permanent Magnet  
    Alloy ..................................  420
Permanent Press  
    Chemically modified fiber ..............  8 / 115.51
    Coated .................................  427 / 393.2+
    Textile finish compositions ............  252 / 8.61
Permanent Wave Machine for Hair ............  D28 / 11
Permeability Tuned Transformer .............  336 / 130
Permutation  
    Locks  
        Combination ........................  70 / 315+
        Key ................................  70 / 382+
        Key bitting ........................  70 / 411
        Switch combined ....................  200 / 42.01+
    Switch .................................  200 / 42.01+
    Typewriter .............................  400 / 100+
    Valves .................................  137 / 269
PERMUTIT™    ...............................  423
Peroxides (See Oxides)  
    Alkali metal ...........................  423 / 582
    Bleaching with .........................  8 / 101+
    Electrolytic coating with ..............  205 / 333
    Electrolytic synthesis .................  205 / 465+
    Electrostatic field or electrical ......  204 / 175
    Discharge ..............................  204 / 175
    Heat producing compositions ............  149 / 37+
    Hydrogen ...............................  423 / 584+
    Organic ................................  568 / 558+
        Acids or salts .....................  562 / 1+
    Oxidizing ..............................  252 / 186.22+
Peroxynitrate Esters .......................  560 / 304
Personal Identification Number (Pin)  
    Secure transactions using ..............  705 / 64
    Cryptography ...........................  705 / 64
        Key management .....................  705 / 71
        Verification of number .............  705 / 72
Perspective Plotters .......................  33 / 432+
Persulfonate Esters ........................  560 / 318
Persulphides (See Polysulfide)  
Perthioborate Esters .......................  560 / 305
Perthiocarboxylate Esters ..................  560 / 302
Pessaries ..................................  128 / 834+
Pesticides See Vermin Destroying ...........  D22 / 120
Pestle .....................................  241 / 291
    Grain hulling ..........................  99 / 600+
    Mortar & pestle ........................  241 / 199+
Petrolatum .................................  208 / 20+
    Treatment or recovery ..................  208 / 24+
Petroleum ..................................  208
    Emulsion breaking ......................  516 / 141+
    Fuels ..................................  44
        Mineral oil only ...................  208 / 15+
    Fuels containing .......................  44
    Lubricants .............................  508 / 110+
        Mineral oil only ...................  208 / 18+
    Production  
        From tunnels .......................  299 / 2
        Thermal or solvent .................  166
        Eg secondary recovery ..............  166
        Wells and related processes ........  166
    Receptacles and storage with  
    Explosion preventing devices  
    (See explosion control)  
    Sulfonates .............................  562 / 33
PETROTHENE™    (Polyethylene) ..............  526 / 352
Pew ........................................  D06 / 334+
Ph Electrode or Ph Sensor  
    Chemical analysis, apparatus ...........  422 / 82.04
Ph Measurements Electrolytic ...............  324 / 438
Phantom Circuit  
    With loading coil ......................  178 / 45
Pharmaceutical Product .....................  D24 / 100+
Pharyngoscopes .............................  600 / 101+
Phase  
    Changer  
        Same current in input & output .....  323 / 212
    Control electrical .....................  323 / 212
    Conversion, electrical .................  363 / 148+
    Indication electrical ..................  324 / 76.77+
    Measuring and indicating ...............  324 / 76.77+
    Measuring time .........................  968 / 847
    Meters .................................  324 / 76.77+
    Phase inverter amplifiers  
        Balanced to unbalanced coupling ....  330 / 116
        Transistor amplifiers ..............  330 / 301
        Unbalanced to balanced coupling ....  330 / 117
    Phase locked loop having lock ..........  331 / DIG 2
    Indicating or detecting means ..........  331 / DIG 2
    Phase locked loop in demodulator .......  329 / 325
    Circuit ................................  329 / 325
    Regulators for alternating current .....  322 / 20
    Generators .............................  322 / 20+
    Shift keying ...........................  375 / 279
    Shifter  
        Miscellaneous electronic device ....  327 / 231+
        Type ...............................  327 / 231+
    Shifting and power factor control ......  323 / 205
        Electronic tube circuit ............  315 / 247
        Having factor control ..............  315 / 247
        Electronic tube circuit having .....  315 / 194
        Shifting ...........................  315 / 194+
        Meter adjustment ...................  324 / 138
        Wave transmission type .............  333 / 138+
Phenacetin .................................  564 / 223
Phenanthraquinone ..........................  552 / 292+
Phenanthrene Purification See .............  585 / 800+
    Aromatic hydrocarbon ...................  585 / 800+
Phenanthridine .............................  546 / 108
Phenanthroline .............................  546 / 88+
Phenates (See Phenols) ....................  568 / 716+
Phenazines .................................  544 / 347+
Phenethicillin .............................  540 / 341
Phenetidine ................................  564 / 443
Phenobarbital ..............................  544 / 305
Phenolphthalein ............................  549 / 308
Phenols (See Naphthols) ...................  568 / 716+
    Alkylation .............................  568 / 780+
    Amino ..................................  564 / 443+
        Addition salts .....................  564 / 280
        Sulfo ..............................  562 / 58
    Carboxylic acid esters .................  560 / 67+
        Monoazo compounds ..................  534 / 660+
    Halo ...................................  568 / 774+
    Mineral oil containing .................  208 / 2
    Nitro ..................................  568 / 706+
        Explosive compositions .............  149 / 55+
        Explosive compositions .............  149 / 68
        Explosive compositions .............  149 / 80
        Explosive compositions .............  149 / 99
        Explosive compositions .............  149 / 103
        Explosive compositions .............  149 / 105+
    Polymers (see synthetic resin or  
    Natural rubber)  
    Sulfo acids ............................  562 / 74
Phenones ...................................  568 / 335
Phenoplast (See Synthetic Resin or  
    Natural rubber)  
Phenothiazines .............................  544 / 35+
Phenoxazines ...............................  544 / 102+
Phenoxy Resin (See Synthetic Resin or  
    Natural rubber)  
Phenylarsonic Acid .........................  556 / 73
Phenylazonaphthyl ..........................  534 / 839+
    Heavy metal containing .................  534 / 713+
Phenylazonaphthylazonaphthyl ...............  534 / 832+
Phenylazophenyl ............................  534 / 843+
Phenylazophenylazonaphthyl .................  534 / 832+
Phenyldimethylpyrazolone ...................  544 / 356+
Phenylene  
    Diamin .................................  564 / 305
Phenylephrine, in Drug .....................  514 / 653
Phenylglycine ..............................  562 / 443
    Indole preparation from ................  548 / 489
Phenylhydrazine ............................  564 / 310
Phenylquinolin .............................  546 / 173
    Carboxylic acid ........................  546 / 170
Phenyltoloxamine, in Drug ..................  514 / 651
Phenylurethane .............................  560 / 75
Phloroglucin ...............................  568 / 763+
Phones  
    Sound power ............................  381 / 177+
Phonograph .................................  369
    Automatic disk changer .................  369 / 178.01+
    Cabinets ...............................  312 / 8.1+
    Check operated switch ..................  194 / 239
    Coin controlled ........................  194
        Design .............................  D14 / 173
    Design .................................  D14 / 199+
    Electrical reproducing or ..............  369 / 128+
    Recording ..............................  369 / 128+
    Figure toy combined ....................  446 / 297+
    Illuminator ............................  362 / 87
    Indexing devices .......................  369 / 30.01+
    Magnetic ...............................  360 / 86
    Making components ......................  29 / 896.24
    Motion picture apparatus combined ......  352 / 32+
    Musical instrument combined  
        Automatic musical instrument .......  84 / 4+
        Comb organ .........................  84 / 100
        Electric tone generation eg ........  84 / 639
        Organ ..............................  84 / 639
    Needle .................................  369 / 173
    Photographic ...........................  369 / 125
    Radio combined .........................  369 / 6
    Reciprocating tone arm motions .........  74 / 28
    Record and composition  
        Cabinets for .......................  312 / 8.1+
        Changer ............................  369 / 178.01+
        Composition for ....................  106 / 37
        Cylinder holder or case ............  206
        Disc blank .........................  428 / 64.2+
        Holder or case .....................  206 / 309+
            Design holder ..................  D06 / 407
            Envelope .......................  229 / 68.1+
            Jacket .........................  493 / 946*
        Magnetic ...........................  360 / 131+
        Molding apparatus ..................  425 / 406+
        Molding processes ..................  264 / 106+
        Packages for .......................  206 / 307+
        Photographic .......................  369 / 284+
        Portable cases .....................  206 / 314+
        Racks for ..........................  211 / 40
        Sound on film ......................  369 / 284+
        Structure ..........................  428 / 64.2+
        Synthetic resin or natural .........  523 / 174
        Rubber containing ..................  523 / 174
        Turntable ..........................  369 / 264+
        With picture .......................  352 / 26
        With sound groove ..................  369 / 272.1+
    Sound on film ..........................  369 / 125+
    Television combined ....................  348 / 729
    Turntable type .........................  369 / 264+
        Stop mechanism .....................  369 / 268+
Phosgene ...................................  562 / 847
Phosphatase ................................  435 / 21
Phosphate Cement ...........................  106 / 690+
Phosphates  
    Cleaning or detergent compositions .....  510
        Organo-phosphates ..................  510 / 467+
    Detergent builder compositions .........  510 / 531+
    Electrolytic synthesis .................  205 / 549+
    Esters .................................  558 / 70+
        Cellulose ..........................  536 / 62
        Phosphorus ester group, ............  558 / 89+
        Formation of .......................  558 / 89+
    Fertilizers containing .................  71 / 33+
    Froth flotation ........................  209 / 902*
    Inorganic ..............................  423
Phosphatides ...............................  554 / 79+
Phosphatize ................................  148 / 253+
Phosphinic Acids ...........................  562 / 8+
Phosphonic Acids ...........................  562 / 8+
Phosphonium ................................  568 / 9
Phosphorescent See Fluorescent  
    Applications and devices ...............  250 / 458.1
    Coating processes ......................  427 / 157+
    Compositions  
        Inorganic ..........................  252 / 301.6 R
        Organic ............................  252 / 301.16
        Radioactive ........................  252 / 625
Phosphoric Acid (See Phosphates) ..........  423 / 316
Phosphorus .................................  423 / 322
    Compounds inorganic ....................  23
        Wave energy preparation ............  204 / 157.45
    Compounds organic ......................  568 / 8
        Heavy metal ........................  556 / 13+
        Wave energy preparation ............  204 / 157.73
    Explosive or thermic ...................  149 / 29+
        Composition containing .............  149 / 29+
    X-art collection .......................  436 / 103
Photocell  
    Angle measuring or axial alignment .....  356 / 152.1+
    Burner .................................  431 / 79
    Digest, automatic temperature & ........  236 / DIG 15
    Humidity regulation ....................  236 / DIG 15
    Electric lamp ..........................  315 / 149+
    Electronic tube ........................  250 / 200+
    Gas tube ...............................  315 / 149+
    Gearing ................................  74
    Headlights .............................  315 / 83
    Mixing of fluids .......................  137 / 93+
    Photographic fluid treating ............  396 / 570
    Apparatus control ......................  396 / 570
    Projection printing & copying ..........  355 / 41
        Illumination system or detail ......  355 / 68
    Radiant energy applications ............  250 / 200+
    Range or height finding with light .....  356 / 4.1+
    Detector ...............................  356 / 4.1+
    Relay ..................................  361 / 160+
    Repeater, telegraphy ...................  178 / 70 P
    Signal .................................  340 / 600+
    Stop mechanism .........................  192 / 116.5+
        Limit stop .........................  192 / 142 A
    Telemetering with photocell sensor .....  340 / 870.29
    Tracer for .............................  409 / 125+
    Tv picture signal generator ............  348 / 332
    Velocity ...............................  356 / 28+
Photochromic Devices .......................  348 / 902*
    Means to alter light transmission ......  359 / 241+
Photochromic Glass Compositions ............  501 / 13
Photocomposition ...........................  396 / 549+
    Display control ........................  345+
Photoconductive ............................  399
    Compositions ...........................  430 / 56+
    Electrophotographic copier element .....  399 / 159+
        Fatigue treatment ..................  399 / 128+
        Preconditioning ....................  399 / 127+
        Residual charge elimination ........  399 / 127+
    Resistors ..............................  338 / 15+
Photocopying ...............................  355+
    Electrophotography .....................  399
    Equipment design .......................  D18 / 36+
    Fiber rods used in .....................  355 / 1
    Multiple color electric ................  399 / 39+
Photoduplication ...........................  399
    Electrophotographic copier .............  399
Photoelectric Analysis Apparatus ...........  422 / 82.09
Photoelectric Cell .........................  D13 / 165
    Applications ...........................  136 / 291*
    Camera  
        Exposure control system ............  396 / 213+
        Focusing system ....................  396 / 89+
    Cathode ray tube  
        Circuit controlled by ..............  315 / 10+
        With photo sensitive electrode .....  313 / 365+
    Circuits ...............................  136 / 293*
    Circuits miscellaneous .................  250 / 206+
    Control of electron tube circuit .......  315 / 149+
    Controlled enlarger ....................  355 / 41
        For color film .....................  355 / 38
        Light control ......................  355 / 68
    Controlled switch ......................  361 / 173+
    Copper oxide ...........................  136 / 265+
    Electronic type ........................  313 / 523+
    Generators, solar cells ................  136 / 243+
    Light sensitive circuits ...............  250 / 214 R+
    Music tone generator using .............  84 / 639
    Processes of making, ...................  438 / 57+
    Semiconductor type .....................  438 / 57+
    Resistive type .........................  338 / 15+
    Signal in electron tube circuit ........  315 / 134
    Controlled by ..........................  315 / 134
    Signal isolator ........................  250 / 551
    Space-satellite applications ...........  136 / 292*
    Stereoplotters .........................  250 / 558+
    Telegraphophone eg phonographs .........  369 / 100+
    Using ..................................  369 / 100+
    Television system using ................  348 / 207.99+
    Testing, calibrating, treating .........  136 / 290*
    Tubes, electronic type .................  313 / 523+
Photoelectric Panels .......................  136 / 243
Photoelectric System .......................  250 / 200+
    Counting articles ......................  377 / 6
    Drinking fountain controlled ...........  239 / 24
    Electric motor controlled ..............  318 / 480
    Fault detector .........................  356 / 237.1+
    Foul line detector .....................  340 / 556+
    Garage door controlled .................  49 / 197+
    Instruments ............................  33 / DIG 3
    Safety stop mechanism ..................  192 / 129 A+
    Street lighting controlled .............  315 / 149+
Photoengraving  
    Etching machine ........................  134
    Printing plates and processes  
        Planographic .......................  101 / 453+
        Relief and intaglio ................  101 / 401.1+
        Stencil type .......................  101 / 128.21
    Processes ..............................  430 / 269+
        Chemical etching ...................  216 / 48
        Electrolytic .......................  205 / 67
Photoenlargers .............................  355 / 18+
Photoetching Processes  
    Etching ................................  216 / 48
    Multicolor printing surface making .....  430 / 301
    Relief or intaglio .....................  430 / 306+
Photoflash  
    Combustion type ........................  431 / 357+
        Bulb ...............................  431 / 358+
    Synchronization with shutter ...........  396 / 180+
    Testing ................................  73 / 1.42+
Photoflood Lamp ............................  313 / 315+
Photogrammetry  
    Aerial cameras .........................  396 / 7+
    Drawing maps from photographs ..........  33 / 20.4+
Photography & Photographic See ............  396
    Radiation imagery ......................  396
    Background .............................  396 / 3
    Calculators ............................  235 / 64.7
    Camera .................................  396
        Automatic exposure control .........  396 / 213+
        Automatic focusing .................  396 / 89+
    Camera case ............................  D03 / 267+
        Photographic recorder ..............  346 / 107.2+
        Seismic cameras ....................  346 / 107.2
    Carriers for photographic goods ........  224 / 908*
    Cartridge ..............................  242 / 335+
    Cartridge or film pack .................  430 / 496+
    Cassettes, x-ray .......................  378 / 182+
    Change bags ............................  396 / 590+
        Auxiliary plate magazine ...........  396 / 523
        With developing means ..............  396 / 564+
    Chemistry,processes and materials ......  430
        Screens ............................  430 / 6+
    Cinematography .........................  D16
    Color ..................................  430
        Cameras using monochrome film ......  396 / 305+
        Facsimile previewers ...............  358 / 527
        Films ..............................  430 / 541+
        Filter .............................  359 / 885+
            Chemically defined .............  430 / 4
        Motion picture .....................  352 / 66
        Processes ..........................  430 / 357+
        Screens ............................  359 / 893
            Chemically defined .............  430 / 7
        Shade measuring & testing ..........  356 / 404
        Unpatterned filter .................  359 / 885+
    Contour photography,chemical ...........  156 / 58
    Copying and photostating ...............  355
        Filters ............................  359 / 885+
        Projectors .........................  355 / 18+
    Daguerreotype ..........................  396 / 438+
    Depth illusion  
        Motion picture appartus ............  352 / 86
        Motion picture process .............  352 / 38
        Photographic process ...............  352 / 86
    Design .................................  D16
    Developing and fixing apparatus ........  396 / 564+
        Equipment design ...................  D16 / 246+
        Tanks ..............................  396 / 636
    Developing and fixing composition ......  430 / 468+
        Developer ..........................  430 / 464+
            Having preservative ............  430 / 490
        Fixing bath ........................  430 / 455
    Direction of force indicator ...........  33 / 314
    Display block ..........................  40 / 720
    Electric  
        Apparatus ..........................  399
        Developing apparatus ...............  399 / 222+
        Developing compositions ............  430 / 105+
        Developing methods .................  430 / 31+
        Methods ............................  430 / 31+
        Plate charging .....................  361 / 225+
        Sensitizing compositions ...........  430 / 60+
        Sensitizing elements ...............  430 / 31
    Electrophotographic copier .............  399
    Equipment case .........................  D03 / 263+
    Exposure identification ................  396 / 310+
    Eye ....................................  396 / 18
        Testing instruments ................  351 / 206
    Films or plates ........................  430 / 490+
        Acetate recovery from ..............  536 / 78
        Cartridge ..........................  430 / 471
        Coating  
            Apparatus ......................  118
            Processes ......................  430 / 935*
        Container for undeveloped film .....  206 / 455+
        Digest, drying & gas or vapor ......  34
        Contact ............................  34
        Holders ............................  396 / 517+
        Nitrate recovery from ..............  536 / 40
        Splicer ............................  D08 / 70.1
        Transparency .......................  356 / 443+
        Wipers .............................  15 / 100
        X ray holders ......................  378 / 167
    Finished photograph ....................  428 / 195.1
    Flash  
        Bulb ...............................  431 / 357+
        Flash lamp .........................  D16 / 239+
    Flash synchronizers ....................  396 / 180+
    Lanterns eg safelights .................  362 / 803*
    Lens ...................................  D16 / 134+
    Light meter ............................  D16 / 238
    Lights .................................  362 / 3+
        In enlarger ........................  355 / 67+
        Lamp supply circuit ................  315
        Shutter controlled .................  396 / 180+
    Magazine ...............................  242 / 335+
    Magazine camera ........................  396 / 360+
    Metal recovery from photographic  
    Material  
        Hydrometallurgy ....................  75 / 713
        Pyr0metallurgy .....................  75 / 635
            Combined with hydrometallurgy ..  75 / 417
    Models .................................  396 / 1+
    Motion picture .........................  352
    Optics .................................  396
    Packaging optical or photographic ......  206 / 316.1+
    Objects ................................  206 / 316.1+
        Assemblage or kit ..................  206 / 578
    Photochemical etching ..................  430 / 299+
    Photoengraving plates  
        Chemical etching ...................  216 / 48
        Electromechanical etching ..........  358 / 3.29+
    Photoflash .............................  396 / 155+
    Photograph  
        Corner mount .......................  493 / 952*
        Mapping & aerial rectifying ........  353 / 5+
        Operating device ...................  235 / 91 C
        Relief modeling ....................  156 / 59
        Viewer .............................  D16 / 221+
    Photoplate carriers ....................  294 / 137+
    Picture frame ..........................  40 / 701+
        Design .............................  D06 / 300+
    Playing cards ..........................  273 / 292+
        Design .............................  D21 / 376+
    Print  
        Dryers .............................  34 / 143+
        Washer .............................  396 / 564+
    Printer  
        Enlarging apparatus ................  355 / 18+
        Projection .........................  355 / 18+
    Printing ...............................  355
    Projector ..............................  D16 / 221+
    Range finder ...........................  D16 / 220
    Recorder ...............................  347 / 224+
    Recording bank deposits ................  346 / 22
    Reproduction equipment .................  D18 / 36+
    Retouching .............................  396 / 655+
    Safe lamp or light .....................  362 / 803*
    Screen .................................  D16 / 241
    Sequential stations for cleaning & .....  134 / 122 P
    Liquid contact .........................  134 / 122 P
        With work transfer or fluid ........  134 / 64 P
        Applying devices ...................  134 / 64 P
    Sound recording or reproducing .........  369 / 125+
    Sound recording record .................  369 / 284+
    Spectroscopy ...........................  356 / 302
    Stands  
        Retouching .........................  396 / 656+
    Stereoscopic camera ....................  396 / 324+
        Viewer .............................  359 / 466+
    Studios ................................  396 / 1+
    Synchronizing flash with shutter .......  396 / 180
    Telegraph recorder .....................  178 / 15
        Code ...............................  178 / 90
    Telescope, microscope or periscope .....  359 / 363
    With photographic means ................  359 / 363
    Transparency viewer ....................  40 / 361+
    Trimmer cutters ........................  83
    Typesetting substitute .................  396 / 549+
    Viewer .................................  D16 / 221+
    Vignetting  
        Contact printing ...................  355 / 125+
        Enlarging ..........................  355 / 40+
    X ray ..................................  378
        Deflected x or gramma ray ..........  378 / 70
Photogravure ...............................  430 / 307+
Photolithographic Printing Equipment .......  D18 / 36+
Photometers ................................  356 / 213+
Photometric Analysis Apparatus .............  422 / 82.09
    Combined with copying camera ...........  355 / 68
        For color pictures .................  355 / 38
    Flicker beam ...........................  356 / 217
    Microphotometers .......................  356 / 213+
Photosensitive  
    Coating applying .......................  430
Phototypograph .............................  396 / 549+
Photovoltaic Devices See  
    Photoelectric  
Phthalazines ...............................  544 / 237
Phthaleins .................................  549 / 308+
Phthalic Acid ..............................  562 / 480+
    Anhydride ..............................  549 / 247
        Oxidation of aromatic compounds ....  549 / 248+
Phthalide ..................................  549 / 307
Phthalimides ...............................  548 / 473+
Phthalocyanines ............................  540 / 122+
Phthalonitrile .............................  558 / 421
Physical Training or Testing ...............  434 / 247+
Physics Teaching ...........................  434 / 300+
Piano ......................................  84
    Actions ................................  84 / 236+
    And forte devices for pianos ...........  84 / 216+
    Automatic player piano .................  84 / 13+
    Bench with music holder ................  312 / 35
    Cases ..................................  84 / 177+
    Combined with organ ....................  84 / 172
    Design .................................  D17 / 7
    Duet piano stools ......................  297 / 232+
    Electric tone generation ...............  84 / 600+
    Exercising device for pianists .........  84 / 467
    Hammer action ..........................  84 / 235+
    Harp ...................................  84 / 258
    Pedal mechanism ........................  84 / 225+
    Pedestal seat ..........................  D06 / 334+
    Pianissimo or forte devices ............  84 / 219
    Piano hammer felting ...................  144 / 29
    Resonance apparatus ....................  84 / 189+
    Stools  
        Adjustable concurrent vertical .....  108 / 138
        And horizontal movements ...........  108 / 138+
        Duet ...............................  297 / 232+
        Vertically adjustable ..............  248 / 161+
    Stringing ..............................  84 / 197+
    Tuning .................................  84 / 454
        Electrical .........................  84 / 458
    Violin .................................  84 / 256+
Piccolo ....................................  84 / 384
Pick  
    Ice ....................................  30 / 164.5+
        Carrier ............................  224 / 232
        Harvesting .........................  299 / 24+
    Making  
        Blanks and processes ...............  76 / 109
        Dies  
    Millstone ..............................  125 / 42
    Miners .................................  125 / 43
        Carrier ............................  224
            Hand carrier ...................  294 / 137+
    Mining .................................  299 / 79.1+
    Stringed musical instrument ............  84 / 320
    Tooth ..................................  132 / 321+
Picker and Picking  
    Article dispensing .....................  221 / 210+
    Cigar and cigarette making .............  131 / 109.1
    Cornstalk type .........................  56 / 103+
        Motorized ..........................  56 / 13.5+
        With cutter ........................  56 / 64+
    Cotton .................................  56 / 36+
        Motorized ..........................  56 / 12.5
        Motorized ..........................  56 / 13.5+
    Fly shuttle ............................  139 / 159+
        Check ..............................  139 / 161 R+
        Plural shed ........................  139 / 436
    Gripper shuttle ........................  139 / 438
    Keylock antipick .......................  70 / 419+
    Keys ...................................  70 / 394
        Trapping ...........................  70 / 390
    Label ..................................  156 / 569+
    Needle .................................  139 / 440
    Pads for envelope gummer ...............  118 / 236
    Piano felt .............................  84 / 460
    Stringed musical instrument ............  84 / 320+
        Automatic ..........................  84 / 8+
    Textile fiber preparing ................  19 / 80 R+
    Tufting sewing machine .................  112 / 80.01+
Picket or Stake  
    Animal restraint .......................  119 / 786+
    Barbing ................................  227
    Fence  
        Like, type of magnetic field in ....  376 / 121
        Gas plasma control .................  376 / 121
        Metallic ...........................  256 / 22
        Wire ...............................  256 / 34
Pickling  
    Apparatus food .........................  99 / 516+
    Cleaning ...............................  134
    Compositions  
        Food ...............................  426 / 654+
        Metal ..............................  510 / 245+
    Electrolytic cleaning of the metal .....  205 / 705+
    Or metal alloy .........................  205 / 705+
    Etching ................................  216 / 48
    Fruits and vegetables ..................  426 / 626
    Meat ...................................  426 / 331
Pickup  
    Balers or bundlers .....................  56 / 341+
    Locomotive driver ......................  105 / 33
    Railway car drop type ..................  104 / 122
    Railway mail ...........................  258
    Scales counter weight ..................  177 / 248
    Vacuum cleaner nozzle attached .........  15 / 415.1+
Pickup Electric ............................  310 / 15+
    Generator ..............................  310 / 15
        Electromagnetic ....................  310 / 15+
        Piezoelectric ......................  310 / 311+
    Phonograph type ........................  369 / 135+
    Seismic type ...........................  367 / 178+
    Sonar submarine type ...................  367 / 141+
    Vibration testing apparatus ............  73 / 649+
Picnic  
    Box or kit .............................  206 / 541+
    Luggage for carrying ...................  190 / 12 R
Picoline ...................................  546 / 348
Picramic Acid ..............................  564 / 441
Picric Acid ................................  568 / 710
Picrolonic Acid ............................  548 / 368.1
Picture  
    Bracket support for ....................  248 / 475.1+
    Exhibitors .............................  D06 / 300+
    Frame ..................................  40 / 700
        Design .............................  D06 / 300+
        Molding ............................  D25 / 119+
    Hook or support for ....................  D08 / 367+
        Support hardware ...................  D08 / 373+
    Illusion ...............................  40 / 541
        Light pipe, fiber optic ............  40 / 547+
    Machine cabinet ........................  312 / 10.1
    Motion .................................  352 / 240
    Photograph see photography  
    Projecting .............................  353
    Puzzle .................................  273 / 157 R
    Recording or reproduction ..............  D14 / 496
    Stands .................................  248 / 441.1+
    Stereoscope ............................  359 / 466+
    Target .................................  273 / 358
    Teaching drawing .......................  434 / 85+
    Toys ...................................  446 / 147+
    Transfer see decalcomania  
    Transmission facsimile .................  358
    Transmission television ................  348
    Transmitting to a distance  
    (See television)  
    Tubes tv ...............................  313 / 364+
    Type support ...........................  248 / 466+
        Stage ..............................  472 / 61
        Travel .............................  472 / 60
    Viewing apparatus  
        For photographic transparency ......  40 / 361+
        Or x-ray ...........................  40 / 361+
        Including illumination .............  359 / 798+
Picture Window See Curtain, Wall ...........  52 / 777+
Pie or Pie Making ..........................  426
    Apparatus ..............................  99 / 450.1
        Cooking ............................  99 / 432+
        Overflow director or receptor ......  126 / 383.1+
        Presses ............................  425 / 233+
    Cooler & stacked article  
        Carrier ............................  294 / 161
        Tray ...............................  294 / 161
    Pans ...................................  99 / DIG 15
    Pie design .............................  D01
    Shaped packaging .......................  206 / 551
    Slicing guide ..........................  D07 / 673
Pier  
    Bridge .................................  14 / 75+
    Foundation .............................  405 / 231+
        Marine .............................  405 / 195.1+
    Track pedestal .........................  238 / 119
    Wharves ................................  405 / 284
Piercing (See Perforating, Devices)  
Piezoelectric ..............................  310 / 311+
    Acoustic wave with mechanical ..........  310 / 334
    Energy coupling ........................  310 / 334
    Acoustic wave with resonator ...........  310 / 322
    Agitation apparatus having .............  366 / 127
    Analysis  
        Chemical analysis, apparatus .......  422 / 68.1
    Casings for ............................  174 / 50+
    Casings for ............................  220 / 2.1 R+
    Charging piezoelectric material ........  361 / 225+
    Cleaning processes using ...............  134 / 1
    Vibrations .............................  134 / 1
    Cleaning processes using ...............  134 / 17
    Vibrations .............................  134 / 17
    Compositions ...........................  252 / 62.9 R
    Crystal  
        Making .............................  29 / 25.35+
        Rochelle salt ......................  562 / 585
    Electrical devices, underwater type ....  367 / 157+
    Electrical systems .....................  310 / 314
    Electrical testing of ..................  324 / 727
    Fluid pressure testing having ..........  73 / 754+
    Galvanometers ..........................  324 / 109
    Generator systems ......................  322 / 2 R
    Light valve ............................  359 / 230
    Manufacture ............................  29 / 25.35
    Microphones ............................  381 / 173
    Modulator having .......................  332 / 139+
    Motor systems ..........................  318 / 116
    Phonograph pickup ......................  369 / 144
    Polymers ...............................  310 / 800*
    Relay circuit ..........................  361 / 207
    Sonic testing having ...................  73 / 570
    Speakers ...............................  381 / 190
    Speed responsive apparatus .............  73 / 514.34
    Telemetering using .....................  340 / 870.3
        In well bore .......................  340 / 856.4
    Transducers ............................  84 / DIG 24
    Under water vibration ..................  367 / 157
    Transducers ............................  367 / 157
Piggy Bank .................................  D99 / 35+
Pigment ....................................  106 / 400+
    Coating implement containing ...........  401 / 40+
    Compositions containing ................  106
        Synthetic resin or natural  
        Rubber (see class 523, 524))  
    Inkwell containing .....................  15 / 257.07+
    Printing ...............................  101
    Solid polymer ctg (see synthetic  
    Resin or natural rubber)  
Pigs .......................................  428 / 576+
    Casting apparatus ......................  164
        Molds ..............................  249 / 174
    Pipeline ...............................  15 / 104.061
Pike Poles .................................  294 / 182
Pile  
    Arrangement holder or spacer ...........  206
    Battery  
        Primary ............................  429 / 152+
    Building ...............................  405 / 231+
        Cutter circular saw type ...........  83 / 743+
    Drivers ................................  173 / 90+
    Fabric .................................  139 / 391+
        Axminster type loom ................  28 / 214+
        Double pile cutting ................  26 / 13+
        Knitted ............................  66 / 194
        Knitting loop forming ..............  66 / 91+
        Laminated ..........................  156
        Loop cutting .......................  26 / 8 R+
        Loop cutting on loom ...............  139 / 43
        Multiple shed weaving ..............  139 / 21
        Terry ..............................  139 / 25+
        Tube loom for axminster type .......  28 / 216
    Installing .............................  405 / 232+
        In marine environment ..............  405 / 224+
    Marine foundation ......................  405 / 195.1+
    Nuclear reactor core arrangements ......  376 / 171
    Nuclear reactor core arrangements ......  376 / 347
    Protection .............................  405 / 211+
    Resistor ...............................  338 / 204+
    Rheostat ...............................  338 / 115
        Compressible .......................  338 / 101+
    Sheet ..................................  405 / 274+
Piles and Fagots ...........................  428 / 588+
Piling  
    Apparatus ..............................  414 / 788.1+
    Bleaching and dyeing running ...........  8 / 152
    Lengths ................................  8 / 152
    Conveyer arranging material on .........  198 / 434+
    Conveyor establishing groups ...........  198 / 418+
    Conveyor for piling bulk material ......  198 / 508
    Conveyor thrower .......................  198 / 638+
    Material in drying process .............  34 / 518+
    Web in accordion folds .................  270 / 30.01+
Pill See Pellet  
    Box or container .......................  206 / 528+
        Dispensing single dose .............  206 / 528+
        Medicator capsule ..................  604 / 403+
        Pocket pen type ....................  206 / 537
        Structured dosage unit .............  424 / 464+
        Tear-off dosages ...................  206 / 532
    Coating machine ........................  118 / 13+
    Coating method .........................  427 / 2.14+
    Medicinal design .......................  D24 / 101+
    Presses ................................  425 / 233+
    Presses ................................  425 / 406+
Pillow .....................................  5 / 636+
    Combined with ground mat ...............  5 / 419
    Cover ..................................  5 / 490
    Design .................................  D06 / 601
    Dressing means .........................  5 / 489
    Sham ...................................  5 / 491
    Therapeutic type (design) ..............  D24 / 183
Pilocarpine ................................  548 / 315.4
    In drug ................................  514 / 397
Pilot (See Igniters)  
    Aircraft control .......................  244 / 220+
    Clutch control .........................  192 / 35+
    Earth boring tool type .................  175 / 385+
    Flames and formation of same ...........  431 / 278+
        Thermocouple controlling ...........  136 / 217+
    Train control ..........................  246 / 166
    Valve or trap  
        Fluid motor distributing ...........  91 / 304+
        Servo-motor ........................  91 / 461
        Thermal trap .......................  236 / 54
        Thermal trap float controlled ......  236 / 55
    Vehicle fender .........................  293 / 48+
    Wheel lock .............................  70 / 253
Pimaric Acid ...............................  562 / 404+
Pimozide, in Drug ..........................  514 / 323
Pin (See Hinge; Joints; Peg; Pintle)  
    Article holding bracket ................  248 / 309.2
    Bedstead element .......................  5 / 303
    Cigar tip perforating ..................  131 / 254
    Curb for watch balance .................  368 / 176
    Cushion ................................  223 / 109 R+
    Draft couplings  
        Animal draft .......................  278
        Railway vehicles ...................  213 / 78+
    Fastener ...............................  24 / 706+
        Article holder .....................  24 / 13
        Binder device releasably ...........  402
        Sheet ..............................  402
        Button .............................  24 / 103
        Button loop interchangeable ........  24 / 89
        Cotter .............................  411 / 513+
        Cuff holder ........................  24 / 48
        Flower holder ......................  24 / 6
        Hair ...............................  132 / 276+
        Hair curler ........................  132 / 245+
        Hat ................................  24 / 706+
            Attached to hat ................  132 / 57.1+
        Holders ............................  223 / 109 R
        Necktie holder .....................  24 / 66.5
        Ornamental .........................  63 / 20
        Ornamental design ..................  D11 / 87
        Packages ...........................  206 / 380+
        Packaging ..........................  227 / 25
        Pencil holder ......................  24 / 12
        Pins combined ......................  24 / 356+
        Tag ................................  40 / 668
        Watchcase ..........................  368 / 313
    Flush pin gauges .......................  33 / DIG 18
    Game ...................................  473 / 118+
        Bowling ............................  473 / 118+
        Pinball machine ....................  273 / 118 R+
    Larding ................................  99 / 494
    Linchpin  
        Land vehicle .......................  301 / 113
        Railway wheel ......................  295 / 50
    Looper for knitters ....................  66 / 3+
    Making .................................  163 / 6+
        Clothespins wire ...................  140 / 83
        Clothespins wood ...................  144 / 9
        Cotter pins ........................  29 / 5
        Glass head pins ....................  65 / 142+
        Hairpin ............................  140 / 87
        Wood pin points  
        Wood pins ..........................  144 / 12
    Ornamental pin,jewelry .................  63 / 20
    Rolling ................................  492 / 14
    Setter  
        Bowling pin ........................  473 / 73+
        Bowling pin spotter ................  473 / 87+
        Watchmakers ........................  81 / 8
        Wood pin ...........................  227
    Shear ..................................  464 / 32+
        Plow releasing .....................  172 / 271
    Ships implement ........................  114 / 221 R+
    Skewer .................................  99 / 419+
    Sprocket chain pivot ...................  474 / 206+
    String tuning musical ..................  84 / 201
    Tumblers lock type .....................  70 / 378
    Wheel ..................................  446 / 217+
    Wrist ..................................  74 / 595+
Pinacol ....................................  568 / 852+
Pinball ....................................  D21 / 322+
Pince-Nez ..................................  D16 / 300+
Pincers  
    Lasting implements .....................  12 / 110+
Pinch  
    Bar ....................................  254 / 36+
    Cocks ..................................  251 / 5
    Effect, in thermo nuclear reactions ....  376 / 121
    Thread, bolt to nut lock, different ....  411 / 307+
    Or varying pitch .......................  411 / 307
Pinching Kinesiatrically ...................  601 / 133
Pincushion .................................  223 / 109 R+
Pineapple  
    Planters ...............................  111 / 912*
Pinene (See Alicyclic Hydrocarbon) ........  585 / 350+
Ping Pong (Design) .........................  D21
    Ball (design) ..........................  D21 / 713+
    Paddle (design) ........................  D21 / 731+
    Table (design) .........................  D21
Pinion (See Rack) .........................  74 / 434+
    Typewriter feed ........................  400 / 330+
    Watch ..................................  368 / 322
        Cannon .............................  368 / 323
Pinking Cutters ............................  83 / 918*
    Machines  
        Reciprocating cutter ...............  83 / 918*
        Rotary cutter ......................  83 / 333+
    Shears .................................  30 / 230
Pinners Hat Machines .......................  223 / 11
Pintle  
    Bedstead element .......................  5 / 303
    Caster .................................  16 / 37
        Retainers ..........................  16 / 38+
    Hinge ..................................  16 / 386
        Coil spring ........................  16 / 304+
        Multiple pintle ....................  16 / 366+
        Retainer ...........................  16 / 263+
    Railway car journal lid ................  384 / 190.6
Pintsch Gas ................................  48 / 211+
Pinwheels ..................................  446 / 217+
    Pyrotechnic ............................  102 / 359
Pipe See Tube; Tobacco .....................  138
    Bending (see bending)  
    Briar ..................................  131 / 230
    Caps ...................................  138 / 89+
        Tobacco ............................  131 / 176+
        Ventilating ........................  454
    Chute ..................................  193 / 29+
    Cleaner  
        Boiler combined ....................  122 / 379+
        Brushing machine ...................  15 / 88
        Cookstove flue .....................  126 / 16
        Design .............................  D32 / 14
        Fluid handling apparatus ...........  137 / 238+
        Implement ..........................  15 / 104.03+
            Operated by fluid current ......  15 / 104.061+
            Sewer ..........................  15 / 104.31+
        Jet pump ...........................  15 / 408
        Process ............................  134 / 22.1+
        Tobacco ash receiver combined ......  131 / 232
        Tobacco smoking ....................  131 / 243+
        Tobacco smoking combined ...........  131 / 184.1
    Closures or plugs ......................  138 / 89+
    Connections  
        Closet bowl ........................  4 / 252.1+
    Corncob ................................  131 / 230
    Couplers & connectors see joints,  
    Pipes,shafts,rods,plates  
        Electrical .........................  439 / 207+
        Electrical box and housing .........  174 / 650
        Electrical quick detachable ........  439 / 195
        Seal for a joint or juncture .......  277
        Valved .............................  251 / 142+
    Coupling ...............................  285
        Valved .............................  251 / 142+
    Cutters for pipes and rods .............  30 / 92+
        Design .............................  D08 / 60
        Well tubing ........................  166 / 55
    Design .................................  D27 / 163+
    Disinfection for flush closet ..........  4 / 222+
    Dry fire extinguisher ..................  169 / 17
    Elimination of in ingot ................  29 / 526.2+
    Fittings ...............................  285 / 120.1+
        Making .............................  29 / 890.14+
    Flanging machines ......................  72 / 115+
    Flaring ................................  72 / 317
        Rotating tool ......................  72 / 115+
    Flexible  
        Coupling ...........................  285 / 238+
        Steam locomotive ...................  105 / 47
        Structure ..........................  138 / 118+
        Valved coupling ....................  251 / 150
    Fluid distribution type ................  D23 / 266
    Fluid pressure brake control ...........  303
    Hangers and supports ...................  248 / 49+
        Dredgers ...........................  37 / 315+
        For slender article ................  211 / 60.1
    Hawse ..................................  114 / 179+
    Heat exchanger .........................  165 / 177+
    Hickeys see bending  
    Holder .................................  D27 / 180+
    Hydraulic ram ..........................  417 / 226+
    Irrigation, vehicle supported ..........  239 / 723+
    Jack for pipes or rods .................  254 / 29 R+
    Joints .................................  285
        Making .............................  29 / 428+
        Making .............................  29 / 890.043
        Valved .............................  251 / 142+
    Laying pipe and cable ..................  405 / 154.1+
        Submarine ..........................  405 / 158+
    Making  
        Bending ............................  72 / 367.1+
        Clay smoking .......................  425 / 233+
        Covering by winding ................  242 / 439+
        Earthenware machine ................  425 / 376.1+
        Earthenware mold ...................  249 / 136+
        Expander ...........................  72 / 317
        Fittings ...........................  29 / 890.14+
        Flanging ...........................  72 / 317
        Foundry mold making ................  164 / 176+
        Glass ..............................  65
        Heat treating metal ................  148 / 590+
        Laminated ..........................  156
            Filament winding by ............  169
        Metal casting ......................  164
            Apparatus ......................  164 / 421+
        Metal fusion-bonding apparatus .....  228
        Metal joint mold ...................  249 / 89
        Reamer .............................  408 / 227+
        Reinforcing by winding .............  242 / 438
        Riveting ...........................  227 / 52
        Soldering clamp ....................  269
        Swaging ............................  72 / 399+
        Trimming ...........................  408 / 28+
    Organ ..................................  84 / 331+
    Organ ..................................  984 / 11+
        Automatic ..........................  84 / 91
    Pattern sprayer ........................  239 / 548+
    Pocket case for ........................  206 / 244
    Rack ...................................  211 / 70.3+
        Smoking device .....................  131 / 260
    Rotary shaft ...........................  464 / 183
        Joints .............................  464 / 18+
    Sand delivery ..........................  291 / 41+
    Shearing machines ......................  30 / 92+
    Smokers pipe literature ................  131 / DIG 1
    Soap bubble ............................  446 / 19+
    Sprinkler ..............................  239 / 266+
    Stand (see tank)  
        Flue boiler ........................  122 / 184+
        Superheater ........................  122 / 475
        Water tube boiler ..................  122 / 321+
        Water tube boiler coil or loop .....  122 / 244+
        Water tube boiler loop .............  122 / 281
        Water tube boiler spur .............  122 / 307+
    Stems ..................................  131 / 227+
    Stove ..................................  126 / 307 R+
        Damper .............................  126 / 292+
        Liquid heating stovepipe ...........  126 / 364.1+
        Oven ...............................  126 / 17
    Strainers ..............................  4 / DIG 13
    Structure ..............................  138 / 177
        End combined .......................  138 / 109
    Supports ...............................  248 / 49+
    Tamper tobacco smokers .................  131 / 247+
    Thread .................................  285 / 390+
        Protectors .........................  138 / 96 R
    Threading  
        Cutting ............................  408
        Milling ............................  409 / 65+
        Rolling ............................  72 / 126
    Tobacco ................................  131 / 330+
        Cartridge ..........................  131 / 348
        Toy ................................  446 / 24
    Train ..................................  239 / 723+
    Waste ..................................  4 / 679+
    Well  
        Cleaner combined ...................  166 / 173+
        Cutter or perforator ...............  166 / 55
        Destroying .........................  166 / 373+
        Expansible .........................  166 / 207
        Joining ............................  166 / 373+
        Plural concentric ..................  285 / 123.1+
        Screen combined ....................  166 / 227+
        Structure ..........................  166 / 242.1+
        Weakening ..........................  166 / 55
    Wrenches ...............................  81 / 52+
Pipeline  
    Cleaner ................................  15 / 104.03
    Filters ................................  210 / 435+
        Intake .............................  210 / 460+
Piperazines ................................  544 / 358+
Piperidine .................................  546 / 184+
Piperonal ..................................  549 / 436
Pipette ....................................  73 / 864.01+
Pipette ....................................  422 / 501+
    Absorption for gas analysis ............  422 / 83+
    Body contacting,eg,hypodermic ..........  604 / 181
    Needle, syringe ........................  604 / 181
        Design .............................  D24 / 112+
        Design .............................  D24 / 222+
    Chemical analysis, apparatus ...........  422 / 82.05
    Chemical apparatus .....................  422
    Chemical methods .......................  23
    Container cap combined .................  141 / 29
    Container or container closure .........  141 / 22+
        Bulb type, eg eye dropper ..........  141 / 24
    Dispensing .............................  222
        Drop formers .......................  222 / 420
    Medicinal ..............................  604 / 295+
        Design .............................  D24 / 112+
    Successive receivers filled from .......  141 / 130
    Continuously flowing source ............  141 / 130
Pipings ....................................  36 / 57
Pipings, Upholstery Trim ...................  428 / 123
Piromidic Acid, in Drug ....................  514 / 303
Pistol  
    Grip ...................................  42 / 71.02+
        Magazine ...........................  42 / 7
    Holsters ...............................  224 / 193
        Design .............................  D03 / 201+
        For either side of torso ...........  224 / 192
        Leather or flexible fabric .........  224 / 911*
        Metal or rigid material ............  224 / 912*
        Rotatably or swingably attached ....  224 / 198
        Shoulder ...........................  224 / 623
        With closure flap ..................  224 / 238
        With gun positioner ................  224 / 243
    Revolvers ..............................  42 / 59+
        Design .............................  D22 / 104+
    Swords .................................  42 / 53
        Design .............................  D22 / 118
    Water ..................................  222 / 79
Piston (See Associated Device)  
    Cleaner for plugs and pistons ..........  15 / 104.011+
    Door check .............................  16 / 49+
    Expansible chamber device ..............  92
        Annular ............................  92 / 107+
        Multiple ...........................  92 / 61+
        Oscillating ........................  92 / 120+
    Filler for fountain pens ...............  401 / 171+
    Fire extinguisher ......................  169 / 33
    Free piston ............................  60 / 910*
    Hammer of tool drive ...................  173 / 206+
    Hypodermic .............................  604 / 218+
    Internal combustion engine .............  123 / 193.1
    Manufacture ............................  29 / 888.04+
        Grinding ...........................  451 / 49
    Meter ..................................  73 / 232+
    Position indicator .....................  33 / DIG 15
    Pressure gauge .........................  73 / 744+
    Ring ...................................  277
        Assembling and disassembling on ....  29 / 222
        Piston .............................  29 / 222+
        Gauge,ring & bearing race ..........  33 / DIG 17
        Group contracting for working ......  29 / 269
        Lubrication combined with  
        Making .............................  29 / 888.07+
        Testing ............................  73 / 114.81
        Testing for leakage ................  73 / 47
    Ring, expander or seat .................  277 / 434+
    Rod (see rod connecting) ..............  74 / 579 R+
        Lubricators ........................  184 / 24+
        Valved piston compressor or ........  417 / 545
        Pump combined ......................  417 / 545+
    Rotary engine ..........................  123 / 200+
    Rotary for motors ......................  418 / 68
    Sausage stuffer ........................  452 / 40+
    Syringe ................................  604 / 218+
    Valve ..................................  251 / 324+
        Check type .........................  137 / 538
    Valved  
        Pump liquid ........................  417 / 545+
Pit Remover ................................  30 / 113.1+
Pitch See Tar  
    Changing  
        Conveyor screw .....................  198 / 659
        Impeller ...........................  416 / 25+
        Musical instrument .................  84
        Pump impeller ......................  415 / 129+
        Ship propeller .....................  440 / 50
    Fuel containing ........................  44
    Ionized gas  
        Fluent material supplied space .....  313 / 231.01+
        Discharge device ...................  313 / 231.01+
    Making, treating and recovery ..........  208 / 39+
    Mineral oil only .......................  208 / 22+
    Music device for giving pitch ..........  84 / 454+
    Plastic compositions containing ........  106
    Production by distillation .............  201
Pitcher ....................................  222
    Dispensing type with handle ............  222 / 465.1+
    Handle, asymmetric .....................  D08 / DIG 9
    With flow controller or closure ........  222 / 556+
Pitchfork ..................................  294 / 55.5+
    Cutter combined ........................  7 / 115+
    Making  
        Blanks and processes ...............  76 / 111
        Dies ...............................  72 / 470+
Pitching Casks .............................  118
Pitchometers ...............................  33 / 530
Pitman See Connecting Rod ..................  74 / 579 R+
    Bearing ................................  384 / 266+
    Making .................................  29 / 888.09
Piton ......................................  248 / 216.1+
    Mountain climbing aids .................  248 / 925*
Pitot Meter ................................  73 / 861.65+
Pitter .....................................  99 / 547+
Pivampicillin ..............................  540 / 336
Pivot (See Hinge; Joints)  
    Bearing ................................  384 / 192+
    Knife-edge fulcrum .....................  384 / 4+
    Rotary crane ...........................  212 / 253
    Teeth ..................................  433 / 220+
    Turntable ..............................  104 / 46
Pku ........................................  436 / 108
Placemat  
    Furniture protector ....................  D06 / 613+
    Paper ..................................  D06 / 613+
Placers (See Arranging; Piling)  
    Electrical wiring ......................  254 / 134.3 R
    Hammer with nail placer ................  81 / 23+
    Track ties .............................  104 / 6
    Track torpedo ..........................  246 / 216
Placket ....................................  2 / 218
Plait and Plaiting  
    Apparel making .........................  223 / 28+
    Box making .............................  493 / 162+
    Knitting ...............................  66 / 14
    Laminated pile fabric making ...........  156
    Tucking ................................  112 / 145
Planes  
    Woodworking ............................  30 / 478+
Planetarium ................................  434 / 286
Planetary (See Gear and Gearing)  
Planimeter .................................  33 / 122
Planing Devices  
    Bench planes for wood ..................  30 / 478+
    Hair planer ............................  30 / 30+
    Planer type combined machine ...........  29 / 30
    Planing machine ........................  409 / 288+
    Stave jointing .........................  147 / 33
    Stoneworking ...........................  125 / 9
    Wood saw teeth .........................  83 / 835+
    Wood slivering scoring .................  144 / 186+
    Woodworking ............................  144 / 114.1+
    Woodworking combined machine ...........  144 / 36+
Plank and Planking (See Panel)  
    Clamp portable for .....................  269 / 91+
    Pavement ...............................  404 / 17+
    Railway truck plank ....................  105 / 208
    Scaffold ...............................  182 / 222+
    Ship ...................................  114 / 84
Planographic  
    Printing ...............................  101 / 130+
        Electrolytic coating ...............  205 / 127
        Multicolor surface making ..........  430 / 301
        Photographic .......................  430 / 301
        Surface making photographic ........  430 / 300+
Plans  
    Building ...............................  52 / 234+
        Store ..............................  52 / 33
        Traffic guide ......................  52 / 174
    Financial portfolio, automated .........  705 / 36
    Management for project .................  705 / 7.11+
Plant ......................................  800 / 295+
    Breeding processes .....................  800 / 260+
    Bud ....................................  800 / 295+
    Carnation ..............................  800 / 323.3
    Chrysanthemum ..........................  800 / 323.2
    Corn ...................................  800 / 320.1
    Derived from embryogenesis .............  800 / 295+
    Derived from mutagenesis ...............  800 / 295+
    Derived from protoplast cell ...........  800 / 295+
    Fusion; somatic cell fusion ............  800 / 304
    Derived from recombinant or ............  800
    Transgenic processes; ..................  800 / 278+
    Transformation .........................  800 / 278+
    Derived from spontaneous mutation ......  800 / 295+
        Mutation process ...................  800 / 276
    Derived from tissue culture ............  800+
        Regeneration process ...............  435 / 430+
    Derived from traditional breeding ......  800 / 295+
        Techniques .........................  800 / 260+
    Dicotyledon seed (dicot) ...............  800 / 298+
    Embryo .................................  800 / 295+
    Embryoid ...............................  800 / 295+
    Flower .................................  800 / 298+
    Flowering plant ........................  800 / 298+
    Fruit ..................................  800 / 298+
    Fruit plant ............................  800 / 298+
    Fusion product .........................  800 / 298+
        Fusion process .....................  800 / 304
    Graft or plant with grafted part .......  800 / 298+
    Gymnosperm .............................  800 / 319
    Leaf ...................................  800 / 295+
    Meristem ...............................  800 / 295+
    Multicellular algae ....................  800 / 296
    Mushroom ...............................  800 / 297
    Mutant plant ...........................  800 / 295+
        Monocot (e.g maize) ...............  800 / 298+
        Resistant to herbicide .............  800 / 300+
        Resistant to insect ................  800 / 302
        Resistant to pathogen ..............  800 / 301
    Other plant parts ......................  800 / 295+
    Pear ...................................  800 / 298+
    Plantlet ...............................  800 / 295+
    Recombinant plant ......................  800 / 295+
        Resistant to herbicide .............  800 / 300+
        Resistant to insect ................  800 / 302
        Resistant to pathogen ..............  800 / 301
    Rice ...................................  800 / 320.2
    Root ...................................  800 / 295+
    Rose ...................................  800 / 323
    Seedling ...............................  800 / 295+
    Seeds, genetically modified ............  800 / 295+
    Shoot ..................................  800 / 295+
    Stem ...................................  800 / 295+
    Tuber ..................................  800 / 295+
    Vegetable plant ........................  800 / 298+
    Wheat ..................................  800 / 320.3
Plant Cell Culture .........................  435 / 420+
Plant Cell Growth Media ....................  435 / 431+
Plant Cell Per Se ..........................  435 / 410+
Planters and Planting  
    Agricultural ...........................  111
        Broadcasting .......................  111 / 130+
        Dibbling ...........................  111 / 89+
        Drilling ...........................  111 / 14+
        Liquid or gas ......................  111 / 118+
        Plant setting ......................  111 / 100+
    Corn planter clutches ..................  192 / 23
Plants  
    Attack resistant stock .................  428 / 907*
    Catalysts and stimulants ...............  504 / 116.1+
    Coating of .............................  427 / 4
    Cutting and comminuting  
        Discriminate .......................  99
        Indiscriminate comminuting .........  241
        Indiscriminate cutting .............  83
    Extracts see extracts  
    Food ...................................  99
    Gas making .............................  48
    Heat or power  
        Aircraft ...........................  244 / 53 R+
        Boiler .............................  122 / 1 R+
        Dynamoelectric .....................  290
        Heat and power combined ............  237 / 12.1+
        Heating systems ....................  237 / 13
        Power ..............................  60
    Husbandry see plant class ..............  47
        Compound tools .....................  7 / 114+
        Covers,shades and screens ..........  47 / 20.1+
        Diggers ............................  171
        Fertilizers ........................  71
        Fertilizers ........................  47 / 48.5
        Fruit cutters and corers ...........  30 / 113.3
        Garden hose ........................  138 / 118+
        Garden rake ........................  56 / 400.01
        Greenhouses ........................  47 / 17+
        Harrows ............................  172
        Harvesters .........................  56
        Hotbeds and coldframes .............  47 / 19.1
        Nutrient supply ....................  47 / 62+
        Ornamental beds ....................  47 / 33
        Planting ...........................  111
        Plows and cultivators ..............  172
        Pollination ........................  47 / 1.41
        Pots and receptacles ...............  47 / 65.5
        Powder dusters or sprayers .........  239
        Presses for balers .................  100
        Sprayers mixing and dissolving .....  239 / 310+
        Terrarium ..........................  47 / 69+
        Threshing ..........................  460
        Tree fumigators ....................  43 / 126
        Tree hacks .........................  30 / 121
        Water culture ......................  47 / 59 R+
    Lights .................................  362 / 805*
    Living .................................  800 / 295+
    Metallurgical ..........................  266 / 142+
    Molding ................................  425
        Brickmaking ........................  425 / 88
    Nameplates or cards for ................  40 / 645+
    Nuclear ................................  376
    Patented varieties of ..................  PLT
    Planting ...............................  111
        Dispensing seed ....................  222
        Grain drill chutes .................  193 / 9
    Preserving .............................  47 / 58.1 CF
        Coating ............................  427 / 4
        Cut flower holder ..................  47 / 41.01+
    Stalks retting .........................  162 / 1+
        Retting bacteriological ............  435 / 279+
    Stands .................................  47 / 39+
    Thinners ...............................  172 / 534+
        Earth working function .............  172 / 900*
        Plant sensor activates power .......  47 / 1.43
Plaque .....................................  428 / 913.3*
    Holder .................................  248 / 488+
    Holder .................................  248 / 490+
    Layer non-planar .......................  428 / 174+
    Layer varying thickness ................  428 / 156+
    Panel type, sectional layer ............  428 / 44+
    Wall decoration ........................  D11 / 132+
Plasma .....................................  424 / 530
    Blood component ........................  424 / 530
        Drying and freezing ................  34 / 284+
    Gas  
        Chemical process employing .........  204 / 164+
        Injecting fuel into body of ........  376 / 127
        Plasma .............................  376 / 127
        Ion producer .......................  361 / 230
        Magnetohydrodynamic generator ......  310 / 11
        Moving or shifting plasma ..........  376 / 107
        Nuclear fusion reactions ...........  376 / 100
            Containment by magnetic field ..  376 / 121
        Systems ............................  315 / 111.21+
Plasmid ....................................  435 / 320.1
Plaster of Paris (See Plaster) ............  106 / 772+
Plaster or Plastered (See Plastering;  
    Plastic)  
    Board ..................................  52 / 443+
        Attached to furring ................  52 / 344+
        Edge joint .........................  52 / 448+
        Laminate ...........................  428 / 411.1+
        Making .............................  156 / 39
    Corner .................................  52 / 250+
    Cutters  
        Hand manipulable ...................  30 / 165+
        Machines ...........................  83
        Pointers ...........................  15 / 235.3
    Medicated composition ..................  424
    On brick ...............................  52 / 444
    Panel strip ............................  52 / 459
    Plaster of paris .......................  106 / 772+
        Alkali metal silicate ..............  106 / 611
        Composition ........................  106 / 611+
        Compositions .......................  106 / 772+
        Processes of burning ...............  106 / 765+
        Splint .............................  602 / 8+
    Screed .................................  52 / 364+
    Slatted lath ...........................  52 / 341+
    Surgical body wear .....................  607 / 149+
    Trimmers ...............................  433 / 144
Plastering  
    Applicator-material supplied ...........  15 / 104.93
    Fountain-trowel ........................  15 / 235.4
    Machines ...............................  425 / 62
    Machines ...............................  425 / 87
    Mortar-joint finisher ..................  15 / 235.3
        Combined ...........................  15 / 105.5
    Trowel .................................  15 / 235.4+
Plastic See Plaster; Polymer  
    Block and earthenware apparatus ........  425
    Chain, staple, horseshoe making ........  59
    Coating ................................  106
    Compositions  
        Medicated ..........................  424
            Bioactive, synthetic ...........  424 / 78.01+
            Nonbioactive, synthetic ........  514 / 772.1+
        Nonsolid plastics ..................  106
        Solid plastic ......................  520
    Cutters ................................  30 / 115
    Deformation, pressing, or treating  
        Metal deformation ..................  72
        Metal fusion bonding ...............  228
        Presses ............................  100
        Shaping or treating apparatus ......  425
        Sheet metal container making .......  413
        Static molds .......................  249
        Wireworking ........................  140
    Dyeing of ..............................  8
    Jewelry ................................  63 / DIG 3
    Metalworking ...........................  72 / 253.1+
        Superplastic material ..............  72 / 709*
    Plastics ...............................  425
        Apparatus for manufacturing ........  425
        Miscellaneous articles .............  428
    Screws, bolts, nails etc ...............  411 / 904*
    Shaping or treating articles  
        Apparatus ..........................  425
        Computer controlled, monitored .....  700 / 117+
        Processes ..........................  264
            Fiber bundle or cable ..........  264 / 1.28
            Fiber optic; waveguide .........  264 / 1.24+
    Structures  
        Brush or broom tuft socket .........  15 / 193
        Coffins ............................  27 / 7
        Fence connections rail .............  256 / 66
        Fence connections wire .............  256 / 50+
        Fences .............................  256 / 19
        Hook ...............................  24 / 907*
        Lacing eyelet ......................  24 / 713.8
        Lacing hocks .......................  24 / 714.3
        Railway ties .......................  238 / 84+
        Seat covers ........................  297 / 219.1+
        Settable material masonry ..........  52
        Splints ............................  602 / 6+
        Synthetic resin building ...........  52 / 309.1
        Component ..........................  52 / 309.1+
    Testing of .............................  73 / 150 R
Plasticizing  
    Casein ctg compositions ................  106 / 159.1
    Gelatine ctg compositions ..............  106 / 160.1
    Polymer treating (see synthetic  
    Resin or natural rubber)  
    Textiles ...............................  8 / 130.1+
Plate  
    Antiskid for tires .....................  152 / 225 R+
    Baking .................................  99 / 372
    Cleaners  
        Brushing ...........................  15 / 77
        Wiping .............................  15 / 102
    Compound metal .........................  428 / 615+
    Dental .................................  433 / 167+
    Design, household ......................  D07 / 500+
    Distribution for electric wires ........  174 / 40 R+
    Electric  
        Conductor ..........................  191 / 13
        Consumable electrode ...............  314 / 44
        Face ...............................  220 / 241
        Face switch ........................  174 / 66+
        Fluorescent ........................  250 / 466.1
        Switch .............................  200 / 271
        Switchboard ........................  361 / 627+
    Electrophotographic copier .............  399 / 166
    Escutcheons ............................  70 / 452
        Door knob ..........................  292 / 357
    Face ...................................  220 / 241
        Electric housing ...................  174 / 66
        Grinding and polishing .............  451
        Lock ...............................  70 / 450
        Making .............................  65
    Hinge ..................................  16 / 251
    Illumination lens perforated ...........  362 / 456
    Joints and couplings (see joints)  
        Pipe and plate .....................  285 / 189+
        Pipe and plural plate ..............  285 / 154.1+
        Pipe and plural plate spaced .......  285 / 19+
        Rod and plate ......................  403 / 230+
        Through plate insulator ............  174 / 151+
        With intermediate member ...........  403 / 187+
    Kick ...................................  16 / 402
        Kick guard .........................  16 / DIG 2
    Knob rose ..............................  292 / 357
    License ................................  40 / 200+
    Lifters ................................  294 / 27.1+
    Lifting clamp ..........................  294 / 901*
    Liquid heater or vaporizer .............  122 / 208
    Nail plates ............................  411
        Distributors .......................  470 / 168+
        Horseshoe nails ....................  411
    Name ...................................  40
        Houses .............................  40
        Letter box .........................  232 / 46
    Nuclear fuel ...........................  376 / 432
    Packages ...............................  206 / 449+
    Pattern foundry type ...................  164 / 241
    Photography  
        Camera .............................  396
        Coating apparatus ..................  118
        Plate holders ......................  396 / 517+
        Plates .............................  430 / 495.1+
        X ray plate changers ...............  378 / 172
        X ray plate holders ................  378 / 167
    Portable closure fastener ..............  292 / 289+
    Printing ...............................  101 / 395
        Addressing .........................  101 / 369+
        Casting ............................  164 / 2+
        Coating electrolytically ...........  205 / 127
        Making electrolytically ............  205 / 69
        Making stereotype ..................  29 / 21
        Mountings ..........................  101 / 382.1+
    Prism for overhead lighting ............  362 / 326+
    Push ...................................  16 / 404
    Racks for ..............................  211 / 41.1
        Dishwashing machine ................  211 / 41.8+
        Drying .............................  211 / 41.3+
    Railway  
        Draft cheek ........................  213 / 54+
        Frog ...............................  246 / 462
        Rail base plate ....................  238 / 209+
        Switch .............................  246 / 453
        Tie ................................  238 / 287+
    Rectifiers, dry ........................  257
    Sounding for pianos ....................  84 / 184+
    Stencil ................................  101 / 127+
        Plate ..............................  101 / 112
    Stock metal ............................  428 / 615+
    Storage battery ........................  429 / 209+
    Stove ..................................  126 / 81
    Stovepipe thimble ......................  126 / 317
    Table article ..........................  220 / 574
        Design .............................  D07 / 500+
        Design, simulative .................  D07 / 571
    Transformer ............................  336
    Tumblers lock type .....................  70 / 377
    Turners ................................  294 / 6
    Watch ..................................  368 / 318
        Design .............................  D10 / 123+
Platen  
    Copyholding (see copyholder)  
    Electrophotographic copier .............  399 / 379+
    Heat exchanger .........................  165 / 168+
    Liquid extracting press ................  100 / 295+
    Memorandum pad type ....................  281 / 6+
    Metal rolling ..........................  72 / 88+
        Roll and platen ....................  72 / 88+
        Screw thread .......................  72 / 88+
    Printing press bed and platen type .....  101 / 287+
        Addressing machine .................  101 / 57+
        Intaglio ...........................  101 / 163+
        Multicolor .........................  101 / 193+
        Numbering ..........................  101 / 78+
        Roller and plate inker .............  101 / 338+
        Roller type inker ..................  101 / 359+
        Selective or progressive ...........  101 / 93+
        Special article ....................  101 / 41+
        Ticket machine .....................  101 / 66+
    Reciprocating press ....................  100 / 214+
        With heating, cooling or drying ....  100 / 92+
            In compacting region ...........  100 / 315+
    Smoothing and pressing textiles ........  38 / 17+
        Conveyor belt combined .............  38 / 10
        Implements .........................  38 / 71+
        Multiple cooperative ...............  38 / 5
        Structure of .......................  38 / 66
        With fluid flow ....................  38 / 15+
    Stamping recorder ......................  346 / 78
    Textile felting ........................  28 / 139+
    Typewriter .............................  400 / 648+
        Card holder combined ...............  400 / 525+
        Case vertical shift ................  400 / 264+
        Divided ............................  400 / 585+
        Flat ...............................  400 / 23+
        Index wheel ........................  400 / 158+
        Key wheel ..........................  400 / 158+
        Rocker platen ......................  400 / 649+
        Shift lock .........................  400 / 274+
        Wear distributors ..................  400 / 554+
    Washing textiles  
        Roll and platen scrubber type ......  68 / 86+
        Scrubbing by carrier roll ..........  68 / 42
        And platen .........................  68 / 42
Platers Railway Tie ........................  104 / 16
Platform  
    Actuator  
        Closure fastener ...................  292 / 94
        Door ...............................  49 / 263+
        Register ...........................  235 / 99 R
    Dumping scow ...........................  114 / 31+
    Floating landing .......................  114 / 263
    Gyrostabilized .........................  248 / 183.1
    Harvester platform adjustments .........  56 / 208+
    Illuminators vehicle ...................  362 / 481
    Industrial .............................  108 / 51.11+
        Synthetic plastic ..................  108 / 51.11+
            Deformable integral ............  108 / 902*
            Fastening elements .............  108 / 902*
    Knock-down .............................  108 / 51.3
    Ladder .................................  182 / 116+
    Land vehicle  
        Swinging axle ......................  280 / 137.5+
            Resilient connections ..........  280 / 124.117+
            Rocking connections ............  280 / 124.114+
    Load-transfer ..........................  108 / 52.1
    Marine drilling ........................  405 / 195.1+
        Pole or tree .......................  182 / 187+
    Portable lift truck ....................  108 / 51.11+
    Railroad car ...........................  105 / 425+
        End buffer .........................  213 / 222
        Truck platform .....................  105 / 211+
    Railroad station .......................  104 / 30+
    Scaffold ...............................  182 / 222+
        Elevating ..........................  182 / 141+
        Tunnel construction ................  405 / 148
    Scale ..................................  177 / 253+
    Shoes ..................................  36 / 19.5
    Stove and furnace ......................  126 / 277+
    Synthetic plastic industrial ...........  108 / 901+
    Platform ...............................  108 / 901+
        Made with deformable integral ......  108 / 902+
        Fastening elements .................  108 / 902*
    Take-it-or-leave-it ....................  108 / 52.1
    Vehicle illuminators ...................  362 / 481
    Window .................................  182 / 53+
Plating (See Coating; Electrolytic  
    Devices)  
    Electrolytic coating processes .........  205 / 80+
    Piano keys having ......................  84 / 437
    Warship armor ..........................  114 / 11+
Platinum  
    Alloys .................................  420 / 466
    Compounds ..............................  23
        Organic ............................  556 / 136+
    Electrolysis ...........................  205
    Igniting devices .......................  431 / 268
    Pyrometallurgy .........................  75 / 633
Player  
    Automatic music instrument .............  84 / 2+
    Automatic musical player ...............  84 / 105+
    Attachable to keyboard .................  84 / 105+
    Automatic player piano .................  84 / 13+
    Musical cord played by single key ......  84 / 443+
    Page turner operated by player .........  84 / 502+
Playground Climber .........................  482 / 35+
    Design .................................  D21 / 826+
Playing Cards ..............................  273 / 292+
    Design .................................  D21 / 376+
Playing Field or Court Game ................  473 / 415+
    Game projectile therefor ...............  473 / 569+
    (E.g., ball, puck, etc .................  473 / 569+
    Player-powered striking type ...........  473 / 516+
    Projector therefor .....................  473 / 516+
    Mechanical or centrifugal ..............  124
    Projector therefor .....................  124
    Goal or target therefor ................  473 / 476
    Field or court therefor ................  472 / 92+
        Ice hockey .........................  472 / 90
    Field or court dividing means ..........  473 / 490+
    Therefor (e.g., tennis net) ............  473 / 490+
    Practice or training device ............  473 / 422+
    Therefor ...............................  473 / 422+
Playpen ....................................  256 / 25
    Childs furniture  
    Design .................................  D06 / 331
    With floor .............................  5 / 99.1
Pleat  
    Apparatus ..............................  223 / 28
    Method .................................  223 / 28
Pleated  
    Web or sheet ...........................  428 / 181
Plectrum  
    Piano ..................................  84 / 258
    Picking device .........................  84 / 320
Plenum  
    Fluid mixer thermal ....................  236 / 13
    Surgical receptor ......................  604 / 313+
PLEXIGLASS™    (See Synthetic Resin  
    Or natural rubber)  
Pliabilizing  
    Shoe soles .............................  12 / 41.2+
        In shoe ............................  12 / 41.1
Pliers .....................................  81 / 300+
    Assembling tool ........................  29 / 268
    Bending ................................  72 / 409.01+
    Clip applying ..........................  72 / 409.01+
        Nose ring ..........................  72 / 409.02+
    Compound tool ..........................  7 / 125+
        Tong type ..........................  294 / 3
    Cotter removers ........................  29 / 248
    Dental .................................  433 / 159+
        Orthodontic ........................  433 / 4
    Design .................................  D08 / 52+
    Ear tag ................................  72 / 409.01+
    Electrical terminal crimping ...........  72 / 409.01+
    Eyelet setting .........................  227 / 144
    Hollow rivet setting ...................  227 / 144
        Implements .........................  12 / 110+
    Lever pulling or pushing ...............  29 / 268
    Making  
        Dies ...............................  72 / 470+
        Pivoted ............................  76 / 64
        Sliding ............................  76 / 69
    Piston ring tools ......................  29 / 223+
    Punches ................................  30 / 363
    Spectacle ..............................  81 / 3.6
    Staking ................................  29 / 232
    Tongs ..................................  294
    Valve tools engine .....................  29 / 221
    Wire twisters ..........................  140 / 121
Plinth (See Base)  
PLIOPHEN™    (Phenoplast) ..................  528 / 129
Plotters ...................................  358 / 1.3
Plotters Perspective .......................  33 / 432+
Plow .......................................  172
    Cable hauled ...........................  104 / 169
    Conduit or trolley  
        Electric current collector .........  191 / 48
        Railway block signal actuation .....  246 / 84
        Railway switch actuation ...........  246 / 252
        Trap ...............................  104 / 145
    Design .................................  D15 / 11+
    Disk bearing ...........................  384 / 157
        Radial antifriction ................  384 / 460
    Ditcher type ...........................  37 / 366+
    Forging dies ...........................  72 / 474+
    Gondola car unloading ..................  105 / 259
    Hillside ...............................  172 / 204+
        Cable hauled .......................  104 / 169
    Iron making ............................  29 / 14
    Lifting clutch .........................  192 / 62
    Making .................................  29 / 14
    Mole ...................................  37 / 370
        Cable laying combined ..............  405 / 184
    Pipe or cable laying ...................  405 / 180+
        Submerged ..........................  405 / 164+
    Potato digger ..........................  171 / 71+
    Potato digger ..........................  171 / 111+
    Road grader type .......................  37 / 381+
    Road grader type .......................  37 / 389+
    Snow  
        Excavator and melter type ..........  37 / 227+
        Railway type .......................  37 / 214+
        Roadway type .......................  37 / 266+
    Subsoil ................................  172 / 699+
Plucks  
    Fowl plucking apparatus ................  452 / 82+
    Fur plucking apparatus .................  69 / 26
    Musical instrument see music  
Plug  
    Barrel bung ............................  217 / 110+
    Blasting ...............................  102 / 333
    Blasting cartridge combined with .......  102 / 304
    Bottle and jar closures ................  215 / 200+
    Closure for laboratory apparatus .......  422 / 568+
    Dispensing flow control  
        Axial discharge stationary .........  222 / 521
        Cap carried axial ..................  222 / 546
        Closure ............................  222 / 563
        Rotary .............................  222 / 554
        Rotary screw .......................  222 / 552
    Electric connector or switch  
        Boxes and housings plug ............  174 / 53
        Receptacle type ....................  174 / 53
        Cleaner ie spark plug ..............  15 / 104.011+
        Conductor reel combined with .......  191 / 12.4
        Electric fuse ......................  337 / 254+
        Electric fuse and socket ...........  337 / 213+
        Electric switch combined with ......  200 / 51 R
        Electric switch type ...............  200 / 253.1+
        Interposed two part ................  439 / 625+
        Outlet box and wall plug ...........  439 / 638+
        Quick detachable ...................  439 / 180
        Resistance plug boxes ..............  338 / 77
        Screw ..............................  439 / 662+
        Telephone multiple switchboard .....  379 / 312+
        Plug terminal ......................  379 / 312+
        Telephone multiple switchboard .....  379 / 20+
        Test ...............................  379 / 20+
        Telephone switchboard ..............  379 / 319+
    Flow meter with orifice and ............  73 / 861.58
    Tapered plug ...........................  73 / 861.58
    Incandescent lamp seal .................  220 / 2.1 R+
    Lock cylinder type  
        Cylinder and plug assembly .........  70 / 367+
        Element ............................  70 / 375
        Rotary .............................  70 / 490+
        Sliding ............................  70 / 361
        Sliding and rotary .................  70 / 360
    Lubricator choke .......................  184 / 52
    Metal receptacle closure ...............  220 / 233+
    Expansible type ........................  220 / 233+
    Metallurgical furnace tap hole .........  266 / 271
    Nail hole ..............................  52 / 514
    Nuclear fuel closure ...................  376 / 451
    Pipe and conduit .......................  138 / 89+
    Pipe coupling solid type ...............  285 / 242
    Plugging instruments dental ............  433 / 25+
    Rail spike receiving ...................  238 / 370
    Spark (see spark plugs)  
    Swivel pipe joint with .................  285 / 121.1+
    Telephone jack and plug ................  439 / 676+
        In central office switchboard ......  379 / 319+
    Tire patch combined with ...............  152 / 370
    Tire plug inserting tool ...............  81 / 15.5+
    Tobacco  
        Attaching cigar and cigarette ......  131 / 94
        Combined ...........................  131 / 366+
        Compositions .......................  131 / 352
        Design .............................  D27 / 101
        Inserting cigar and cigarette ......  131 / 72
        Making .............................  131 / 111+
        Shapes .............................  131 / 111+
        Wrappers or binders ................  131 / 365
    Valve  
        Combined with strainer .............  4 / 287
        Head ...............................  251 / 356+
        Hydrant type .......................  137 / 272+
        Liquid filter with screened ........  210 / 429+
        Type ...............................  210 / 429+
        Movable liquid filter ..............  210 / 390
        With screened type .................  210 / 390
        Multiple outlet nozzle rotary ......  239 / 392+
        Nonstop reciprocating ..............  137 / 528+
        Plug cock and seat abrading ........  451 / 116
        Machine ............................  451 / 116
        Reciprocating ......................  251 / 318+
        Rotary .............................  251 / 309+
        Ship bottom type ...................  114 / 197
        Sink or bath outlet ................  4 / 650
            Condition responsive ...........  4 / 668+
            Drain ..........................  4 / 688+
            With overflow or trap ..........  4 / 679+
        Stopper type .......................  4 / 295
    Well  
        Cementing or plugging ..............  166 / 285+
        Closing port .......................  166 / 141
        Handling ...........................  166 / 373+
        Preset .............................  166 / 114
        Preset conduit carried .............  166 / 116
        With expanding anchor ..............  166 / 118+
        With outward pressure means ........  166 / 101
        With pump or plunger ...............  166 / 106
Plug in Units  
    Contact and socket structure ...........  439 / 626+
    Electrical modules .....................  361 / 728+
Plumb Bob ..................................  33 / 392+
    Design .................................  D10 / 61+
Plumbago (See Graphite)  
Plumbanes ..................................  556 / 95
    Hexaorganodiplumbanes ..................  556 / 82
Plumbates ..................................  423 / 594.9+
Plumber'S Helper ...........................  4 / 255.01+
Plumbing  
    Bath and closet ........................  4
    Design .................................  D23 / 200
    House fittings .........................  4 / DIG 7
    Sewerage ...............................  137 / 356+
    Snake ..................................  15 / 104.33
    Trap making ............................  29 / 890.146
    Water flow control .....................  137
    Water pressure regulator ...............  137 / 505+
Plumbs  
    Structure ..............................  33 / 391+
    Wall construction guides ...............  33 / 404+
    Wireworking ............................  140 / 41
Plumes .....................................  428 / 6
    Plume abatement ........................  261 / DIG 77
Plunger  
    Air pressure guns having ...............  124 / 65+
    Conveyer elements ......................  198 / 717+
    Die or cutter  
        Box making .........................  493 / 167+
        Pastry cutter ......................  83
        Plastic metal shaping ..............  72 / 273
        Sheet or bar die cutter ............  83
        Stationary vegetable or meat .......  83 / 401+
        Cutter .............................  83 / 401+
        Wood slivering .....................  144 / 190
    Drilling or dibbling planters ..........  111
    Having .................................  111
    Expansion chambers having ..............  138 / 31
    Feed (see type of machine)  
        Coal spreader for furnace ..........  110 / 114
        Locomotive tender ..................  105 / 233
        Manual dibblers ....................  111 / 96
        Railway sand feeders ...............  291 / 36+
        Rotary peripheral face .............  451 / 197+
        Abraders ...........................  451 / 197+
    Gongs having ...........................  116 / 152+
    Mechanical gun plunger release .........  124 / 33+
    Mechanism ..............................  124 / 33+
    Press  
        Block forming plungers .............  425 / 398+
        Block forming plungers .............  425 / 344+
        Block forming plungers .............  425 / 412+
        Block forming presses  
            Portable .......................  425
            Reciprocating mold .............  425 / 352+
            Reciprocating mold .............  425 / 406+
            Stationary mold ................  425 / 352+
            Stationary mold ................  425 / 406+
        Die expressing metal ...............  72 / 273
        Earthenware die expressers .........  425 / 406
        Glass mold plungers ................  65 / 362
        Metal mold sand packers ............  164 / 207+
        Miscellaneous die expressers .......  425 / 406+
        Presses ............................  425 / 406+
    Pump having ............................  417 / 437+
    Textile fluid treating apparatus .......  68
    Having .................................  68
    Vegetable comminutors having ...........  241
    Water closet having ....................  4 / 300+
Plural Amplifier Channel Systems ...........  330 / 124 R+
    Transistor type ........................  330 / 295
Plutonium Compounds  
    Inorganic ..............................  423 / 251
    Organic ................................  534 / 11+
Ply  
    Delaminating apparatus .................  156 / 750+
    Delaminating process ...................  156 / 701+
    Laminate ...............................  428
        Wood ...............................  428 / 106
        Wood ...............................  428 / 533+
    Laminated ..............................  428 / 411.1+
    Sewing machine trimmer combined ........  112 / 127
    Tires resilient ........................  152 / 151+
    Woven fabrics ..........................  139 / 409+
Plywood (See Veneering) ....................  52
    Making  
        Glue appliers and presses ..........  156
        Presses ............................  156 / 580+
        Processes ..........................  156
        Processes combined .................  144 / 346+
Pneumatic (See Hydraulic)  
    Apparel turning ........................  223 / 43
    Burner extinguisher ....................  431 / 145
    Carding stripping ......................  19 / 109
    Chuck ..................................  279 / 4.01+
    Cleaners ...............................  15 / 300.1+
    Clock ..................................  368 / 54
    Combined automatically played ..........  84 / 6
    Musical instruments ....................  84 / 6
    Conveyers and feeders  
        Agitation and ......................  222 / 195
        Article dispensing .................  221 / 278
        Conveyer ...........................  406
        Pneumatic or liquid stream .........  209 / 906*
        Feeding item .......................  209 / 906*
        Sheet or web feeding or ............  271
        Delivery ...........................  271
        Stacker ............................  406
    Cotton harvester .......................  56 / 30+
        Motor driven .......................  56 / 13.1+
    Dispatch ...............................  406
        Tube or system .....................  D18 / 35
    Endless flexible track .................  305 / 34
    For land vehicle .......................  305 / 34
    Face plate expander ....................  105 / 11
    Folder .................................  493 / 450
    Gas separator cleaning .................  55 / 282+
    Grooming device ........................  15 / 401+
    Gun ....................................  124 / 56+
    Harvester ..............................  56 / 12.9+
    Jet for marine propulsion ..............  440 / 38
    Mattresses .............................  5 / 706+
    Metal casting injector .................  164 / 306+
    Musical instrument player ..............  84 / 107
    Attachable to keyboard .................  84 / 107
    Musical instrument tracker .............  84 / 151+
    Musical instrument tracker .............  84 / 146+
    Combined with sheet ....................  84 / 146+
    Nail driving device ....................  227 / 9
    Piano automatically played .............  84 / 24+
    Pipe organ .............................  84 / 331+
    Power plant ............................  60 / 407+
    Pump ...................................  417 / 118+
        Air jet combined ...................  417 / 86
        Jet type pump ......................  417 / 151+
    Railway cable gripper ..................  104 / 203
    Railway propulsion system ..............  104 / 155
        Locomotives ........................  105 / 63+
    Selector for automatically played ......  84 / 115
    Musical instrument .....................  84 / 115+
    Sheet turner for sheet music ...........  84 / 519
    Shoe forms .............................  12 / 114.4
    Shoe sole cushion ......................  36 / 29
    Tamper for track laying ................  104 / 10+
    Tire (see tire, pneumatic) ............  152 / 151+
    Toy ....................................  446 / 176+
    Typewriter .............................  400 / 176+
        Carriage return ....................  400 / 182+
    Velocipede seat ........................  297 / 199+
    Wheel ..................................  152 / 1+
    Wind instrument automatically ..........  84 / 83
    Played .................................  84 / 83+
Pneumothorax Apparatus .....................  604 / 26
Pocket  
    Alarm watch or clock ...................  368 / 244
    Apparel element ........................  2 / 247+
        In garment supporter ...............  2 / 300
        Shoe with ..........................  36 / 1
    Book covers ............................  281 / 31
    Calendars combining card pockets .......  40 / 122
    Carried  
        Brush with recess for comb .........  132 / 121
        Lighter ............................  431 / 129+
        Lighter ............................  431 / 146+
        Match safe .........................  206 / 96+
        Special receptacle carried in ......  206 / 37
        Pocket .............................  206 / 37+
        Spittoon carried in pocket .........  4 / 259
        Ticket case ........................  206 / 39
    Cartridge belt with pocket holder ......  224 / 660+
    Cartridge belt with tilting ............  224 / 660+
    Compound tool ..........................  7 / 118+
        Pocketknife ........................  30 / 155+
    Dispenser with  
        Barometric or angle of repose ......  222 / 457
        Trap ...............................  222 / 457
        Movable trap chamber ...............  222 / 344+
        Tiltable container trap only .......  222 / 454+
        Trap chamber cutoff ................  222 / 425+
    Game table with  
        Ball game ..........................  273 / 123 R+
        Moving surface type ................  273 / 113+
        Pool ...............................  473 / 28
        Pool with chutes connected .........  473 / 22+
    Lamps ..................................  362 / 157+
        With writing pads ..................  362 / 99
    Letter box with ........................  232 / 33
    Letter box with pivoted trap ...........  232 / 47+
    Machine  
        Article dispenser ejector ..........  221 / 208+
        Bevel machine table ................  144 / 125
        Cutting window stile pockets .......  144 / 19
        Dryer rotary drums .................  34 / 109
        Dryer shelves ......................  34 / 172
        Endless conveyor with flexible .....  198 / 715
        Pocket .............................  198 / 715
        Felting machine roller .............  28 / 126+
        Locomotive tender draft device .....  213 / 6
        Loom pushed shed ...................  139 / 28
        Pneumatic conveyer feeder ..........  406 / 63+
    Manifolding  
        Continuous form strip-folder .......  462 / 6
        Or pocket type .....................  462 / 6
    Match safe .............................  206 / 96+
        Design .............................  D27 / 173+
    Paper wrappers with ....................  229 / 87.5
    Picture mounts pocketed ................  40 / 775
    Railway car post holder ................  105 / 408
    Railway flat car stake holder ..........  105 / 390+
        Releasable .........................  105 / 383
    Sliding window sash ....................  49 / 372+
    Solid separator employing ..............  209 / 684+
    Stove grates with ......................  126 / 159
    Stoves .................................  126 / 38
    Support with ...........................  211 / 55+
    Telescopes .............................  359 / 408
    Watches ................................  368 / 62+
    Wooden receptacle with .................  217 / 28
    Woven ..................................  139 / 389+
Pocketbook .................................  150 / 100+
    Closure ................................  150 / 118+
    Design .................................  D03 / 232+
Pocketknife ................................  30 / 155+
    Compound tool ..........................  7 / 118+
Pod  
    Augers  
        Wood ...............................  408 / 199+
Pogo Stick .................................  482 / 77
    Design .................................  D21 / 413
Point & Points (See Impaling; Prong;  
    Punch)  
    Bands wheel hub ........................  301 / 107
    Glaziers ...............................  411 / 477+
    Guards or holders  
        Hatpin .............................  132 / 72.1
        With hatpin guide ..................  132 / 69.1
    Marker guide ...........................  33 / 574+
        With gauge .........................  33 / 666+
    Nails spikes tacks .....................  411 / 493+
    Needles see notes to ...................  223 / 102
    Parallelizing divider ..................  33 / 558.03
    Pen (see penpoints) ...................  15 / 445+
    Plow ...................................  172 / 681+
    Printers for the blind .................  400 / 109.1+
    Protectors pencil sharpener ............  30 / 460
    Railway switch .........................  246 / 435 R+
        Thrower ............................  246 / 264+
    Setter glazier .........................  227
    Spreaders nail spike tack ..............  411 / 359+
    Switch  
        Foot guard .........................  238 / 380
        Structure ..........................  246 / 435 R+
        Thrower railway ....................  246 / 264+
        Trolley transfer ...................  104 / 104+
    Trolley transfer .......................  104 / 104
    Vaccine supply .........................  206 / 367
    Well casing ............................  175 / 19+
Point of Sale Terminal .....................  705 / 16+
    Automated ..............................  705 / 16
        Keyboard features ..................  705 / 25
        Output features ....................  705 / 24
        Reading electronic price labels ....  705 / 20
        Tracking inventory .................  705 / 22
    Coupon distribution and redemption, ....  705 / 14.38
    Electronic .............................  705 / 14.38
    For electronic commerce ................  705
        Remote charge determination ........  705 / 77
        Using encrypted data ...............  705 / 77
            Communication between ..........  705 / 79
            Two financial networks .........  705 / 79
            With third party ...............  705 / 78
    Multiple, interconnected, and/or .......  705 / 21
    Controlled by host .....................  705 / 21
    Network ................................  705 / 21
    Price look up (plu) file ...............  705 / 18
    With electronic funds ..................  705 / 17
    Transfer capabilities ..................  705 / 17
    With record storing abilities ..........  705 / 17
        Sales tax ..........................  705 / 19
    With tax calculation abilities .........  705 / 19
    With theft prevention devices ..........  705 / 18
Pointer  
    Chance device ..........................  273 / 141 R
    Indicator type .........................  116
        Arm structure ......................  116 / 327+
    Masonry implement ......................  15 / 235.3
Pointing See Calking  
    Barrel hoop lapping and ................  147 / 45
    Bolts ..................................  470 / 86
    Nail cutting and .......................  470 / 160
    Pencil (see pencil sharpeners) ........  30 / 451+
    Screw threading and ....................  470 / 68
    Screws .................................  470 / 65
    Spike ..................................  470 / 134
    Staple cutting bending and .............  59 / 74
    Wooden pin .............................  144 / 30
Poise  
    Scale  
        Automatic ..........................  177 / 235+
        Beam ...............................  177 / 246+
        Beam automatic .....................  177 / 212+
        Computing ..........................  177 / 35
Poison .....................................  424
    Burnible-in nuclear reactor ............  976 / DIG 116
    Hazardous or toxic waste ...............  588
    Destruction or containment .............  588
    Holder or container  
        Alarm combined .....................  116 / 72
        Indicating contents ................  215 / 367
        Vermin destroying ..................  43 / 131
Poker ......................................  294 / 14
Poker Chips ................................  D21 / 390
    Rack ...................................  211 / 49.1
Pokes ......................................  119 / 758+
Polarimeters ...............................  356 / 367+
Polariscopes ...............................  356 / 366
Polarity Testers ...........................  324 / 133
Polarized Devices and Polarizers  
    Electromagnet with armature ............  335 / 230+
    Electromagnetic wave ...................  343 / 909
        In wave guide ......................  333 / 21 R
        With antenna .......................  343 / 756
    Gem and crystal examining ..............  356 / 30+
    Glass ..................................  359 / 483.01+
    Headlight ..............................  362 / 19
    Illuminated signs ......................  40 / 548
    Image projectors .......................  353 / 20
    Light modulator ........................  359 / 237+
    Light polarizer ........................  359 / 483.01+
        Combined with illuminator ..........  362 / 19
    Making  
        Structural orientation .............  264 / 1.31+
    Radio wave polarizations ...............  343 / 909+
    Spectro-photometers ....................  356 / 326
    Stage illusions using ..................  472 / 57+
    Stereoscope, stereo systems ............  359 / 465
    Storage and retrieval of ...............  365 / 121
    Information ............................  365 / 121
    Switch electromagnetic .................  335 / 78+
    Telegraph code recorder ................  178 / 93
        With antenna .......................  343 / 756
    Testing with polarizers ................  356 / 364+
    Vision testing means ...................  351 / 49
Polarographic Chemical Analysis ............  204 / 400+
    Apparatus ..............................  422 / 82.01+
Pole (See Mast; Post)  
    Barber .................................  40 / 607.01+
    Boat ...................................  440 / 36
    Changer ................................  361 / 245+
    Changing in alternating  
    Current motors  
        Induction ..........................  318 / 773
        Synchronous ........................  318 / 704
    Climbers ...............................  182 / 133+
        Leg or shoe attachable .............  182 / 221
    Collectors trolley .....................  191 / 64
        Couplings ..........................  191 / 60.5
    Curtain design .........................  D08 / 376+
    Electrical conductor ...................  174 / 45 R
        For electric wire ..................  52 / 4
    Fire escape ............................  182 / 189+
        Wall attached ......................  182 / 100
    Flagstaffs .............................  116 / 173+
    Hammock ridgepole ......................  5 / 130
    Handlers ...............................  414 / 23
    Land vehicle  
        Supports ...........................  278 / 86+
        Thills .............................  278 / 33+
        Tow ................................  280 / 493+
    Light support ..........................  362 / 431
        Adjustable light ...................  362 / 418+
    Magnetoelectric armatures ..............  310 / 264
    Manipulating ...........................  294 / 209+
    Plate or piece  
        Switch .............................  200 / 271
        Telephone magnet ...................  381 / 412+
    Rack type ..............................  211 / 105.1+
    Rossing bark ...........................  144 / 208.1+
    Scaffolds for ..........................  182 / 187+
    Ski ....................................  280 / 819+
    Spray ..................................  239 / 532
    Switch electric ........................  200 / 49
    Tent ...................................  135 / 114
    Window operating .......................  49 / 460+
Poler  
    Bearing plate for poling railway .......  105 / 462
    Cars ...................................  105 / 462
    Marine propulsion device ...............  440 / 36
    Side track push rods ...................  213 / 224
Police or Fire Alarms and Signals  
    Signal systems .........................  340 / 287+
        Telephone circuit combined .........  379 / 37+
    Telegraphs .............................  340 / 287+
    Whistle ................................  116 / 137 R+
Policemens Clubs or Batons .................  463 / 47.2+
    Carriers for ...........................  224 / 914*
Polishing and Polishing Appliances  
    (See burnishing)  
    Abrading ...............................  451
    Boot and shoe machines  
        Cleaning and blacking combined .....  15 / 30+
        Cleaning combined ..................  15 / 36+
        Component parts in making ..........  12 / 79.5
    Coating treating process ...............  427 / 355
    Compositions ...........................  106 / 3+
    Dental grinders combined ...............  433 / 142
        Motor driven .......................  433 / 125
    Fabric type ............................  15 / 209.1+
    Hat pouncing combined ..................  223 / 20
    Machinery design .......................  D15 / 124+
    Metal burnishing .......................  29 / 90.01+
    Needle eye working .....................  451 / 315
    Paper calendering ......................  29 / 90.1
    Scouring machines combined .............  451 / 66
        Planing combined ...................  144 / 38
        Turning combined ...................  144 / 47
    Shoe stands with polisher guide ........  15 / 266
    Shoebrush and dauber ...................  401 / 39
    Woodworking machines  
Pollinating ................................  47 / 1.41
Pollution  
    Decreasing, & environmental impact .....  422 / 900*
Polo .......................................  473 / 415+
    Ball ...................................  473 / 569+
    Goal ...................................  473 / 478
    Mallets ................................  473 / 558
    Pony boots .............................  36 / 111
Polyacrylyl (See Synthetic Resin or  
    Natural rubber)  
    Fiber dyeing ...........................  8
    Safety glass employing .................  428 / 442
Polyamides (See Synthetic Resin or  
    Natural rubber)  
    Fiber dyeing ...........................  8
    Processes of molding ...................  264 / DIG 61
Polyarylmethyl Compounds ...................  552 / 101+
    Amines .................................  564 / 315+
    Ketones ................................  568 / 332
        Carboxylic acids ...................  562 / 460
Polybenzanthronyl ..........................  552 / 273
Polycarbodiimide (See Synthetic Resin  
    Or natural rubber)  
Polycarboxylic (See Type Compound) ........  260
    Acyclic ................................  562 / 590+
    Acyclic esters .........................  560 / 190+
    Alicyclic esters .......................  560 / 127
    Anhydrides .............................  549 / 231+
    Aromatic esters ........................  560 / 76+
    Polymers derived from see  
    Synthetic resin or natural  
    Rubber  
Polychlorinated Biphenyl(Pcb) Removal ......  208 / 262.5
Polycycles .................................  280 / 282
Polycyclic Hydrocarbons  
    Alicyclic synthesis ....................  585 / 360
    Aromatic synthesis .....................  585 / 400
Polyelectrolytes ...........................  252 / 62.2
Polyelectrolytes ...........................  429 / 188+
    Electrolytic chemical processes ........  205
Polyepoxide  
    Polymers from (see synthetic resin  
    Or natural rubber)  
Polyester  
    Fiber dyeing ...........................  8
    Fibers .................................  8 / DIG 4
    Polymers from (see synthetic resin  
    Or natural rubber)  
Polygon ....................................  33 / 482
Polygonal Turning and Cutting  
    Broaching ..............................  409 / 243+
    Drilling and boring ....................  82 / 1.2+
        Wood square hole ...................  408 / 30
    Milling ................................  409 / 79+
    Planing ................................  409 / 289+
    Turning ................................  82 / 18
        Wood ...............................  142 / 2+
    Wood  
        Polygonal cutters ..................  144 / 224+
        Shaping ............................  144 / 138
Polyhydric Alcohol .........................  568 / 852+
    Carbohydrates ..........................  536 / 1.11+
    Ethers .................................  568 / 672+
    Fermentative production ................  435 / 158+
Polyimide  
    Polymers from (see synthetic resin  
    Or natural rubber)  
Polymer  
    Carbohydrates ..........................  536 / 1.11+
    Compositions  
        Medicated ..........................  424
            Bioactive, synthetic ...........  424 / 78.01+
            Nonbioactive, synthetic ........  514 / 772.1+
        Nonsolid plastics ..................  106
    Dissolver ..............................  422 / 901*
    Liquid hydrocarbon .....................  585 / 17+
        Synthesis ..........................  585 / 502+
    Low moleuclar weight hydrocarbon .......  106 / 901*
    Polymer containing composition .........  106 / 901*
    Proteins ...............................  530 / 300+
    Replacing hard animal tissue ...........  528 / 950*
        Solid plastic ......................  520
    Solid synthetic resin or natural  
    Rubber (see synthetic resin or  
    Natural rubber)  
Polymerization (See Compound Produce)  
    Addition (see also synthetic resin .....  526 / 59+
    Or natural rubber) .....................  526 / 59+
        Apparatus for ......................  526 / 920*
    Aftertreating ..........................  252 / 182.11+
    Crosslinking ...........................  252 / 182.11+
    Curing .................................  252 / 182.11+
    Fatty oils .............................  554 / 25+
    Hardening ..............................  252 / 182.11+
    Hydrocarbon synthesis, cyclic  
        Alicyclic ..........................  585 / 360+
        Aromatic ...........................  585 / 422+
        Aromatic cyclic ....................  585 / 415+
    Monomer polymerized in presence of  
    Transition metal containing  
    Catalyst (see catalyst)  
    Olefin, fiber dyeing ...................  8
    Photo image ............................  430 / 269+
    Precursors .............................  252 / 182.11+
    Utilizing electric, radiant  
        Within nuclear reactor .............  376
    Utilizing wave energy ..................  522 / 1+
    Vulcanizing ............................  252 / 182.11+
Polymixins .................................  530 / 319
Polyolefin .................................  8 / DIG 9
    Polyolefin-type foam  
        Injection molding ..................  264 / DIG 83
Polyp Removal Devices ......................  606 / 110
Polyphase  
    Current meters .........................  324 / 107+
Polyphenylene Oxide (See Synthetic  
    Resin or natural rubber)  
Polypod  
    Breakwater .............................  405 / 29
Polypropylene  
    Molding foamed articles ................  264 / DIG 16
Polysaccharides ............................  536 / 123.1+
    Heteropolysaccharides ..................  536 / 123
Polysulfide ................................  423 / 511+
    Fatty oils .............................  554 / 85+
    Organic ................................  568 / 21+
        Resins (see synthetic resin or  
        Natural rubber)  
Polysulfone (See Synthetic Resin or  
    Natural rubber)  
Polyurethane  
    Cellular product .......................  521 / 159+
    Filters in gas separation ..............  55 / DIG 13
    High resiliency or cold cure ...........  521 / 904*
    Nonstructural laminate .................  428 / 423.1
    Nontextile dyeing ......................  8 / 515
    Radiation sensitive binder .............  430 / 906*
    Stock material .........................  428 / 160
    Synthetic fiber dyeing .................  8 / 926*
    Synthetic resins with solvent  
        Alcohols ...........................  524 / 379+
        Hydrocarbons .......................  524 / 474+
        Phenols ............................  524 / 323+
    Terminal ethylenic unsaturation ........  525 / 920*
    Tire or tube tread or carcass ..........  156 / 128.1
    Wave energy preparation or .............  522 / 1+
    Treatment ..............................  522 / 1+
Polyvinyl Acetals ..........................  525 / 61
    Safety glass employing .................  428 / 437
Pom-Pom Gun ................................  89 / 126
Pompom See Tassel ..........................  428 / 4+
Pontoons  
    Buoys ..................................  441 / 3
    Landing platforms ......................  114 / 258
    Salvage ................................  114 / 44+
Pool  
    Billiard game ..........................  473 / 1+
        Ball ...............................  473 / 52+
        Cues ...............................  473 / 44+
        Tables and accessories .............  473 / 1+
    Glass heating furnace ..................  65 / 336+
    Swimming, purification  
        Process ............................  210 / 749+
        Purification .......................  210 / 167.1+
        Solar heated .......................  126 / 561+
    Swimming-type nuclear reactor ..........  376 / 174
    Swimming-type nuclear reactor ..........  376 / 361
    Swimming-type nuclear reactor ..........  376 / 403
Popcorn  
    Machine ................................  D07 / 325
    Poppers ................................  99 / 323.5
    Presses ................................  425 / 406+
    Sheller ................................  460
Popgun .....................................  124 / 63+
    Design .................................  D21 / 573+
POPSICLE™    Forming Machine ...............  425 / DIG 219
Porcelain  
    Compositions ...........................  501 / 141+
        Electric insulating ................  501 / 141
    Shaping processes ......................  264
Pore Forming or Porous  
    Compositions ...........................  106 / 122
        Abrasive ...........................  51 / 296
        Alkali metal silicate ctg ..........  106 / 601+
        Cement hydraulic setting ...........  106 / 672+
        Ceramic ............................  501 / 80+
    Glass ..................................  501 / 39
    Metal casting ..........................  164 / 79
    Molding ................................  264 / 41+
    Mortar mixer combined ..................  366 / 10+
        Processes ..........................  366 / 2+
    Synthetic resin ctg (see cellular  
    Under synthetic resin or  
    Natural rubber)  
    Wells  
        Gravel placing means ...............  166 / 51
        Gravelling .........................  166 / 278
        Porous cementitious filter .........  166 / 276
        Porous material screens ............  166 / 228
Pork .......................................  D01
Porosity Test ..............................  73 / 38
Porous Devices See Pore Forming &  
    Type of device  
    Stock material, cellular layer .........  428 / 304.4+
    Layer ..................................  428 / 304.4
Porous Forming (See Cellular Under  
    Synthetic resin or natural  
    Rubber)  
Porphyrins .................................  540 / 145
Port  
    Boiler .................................  122 / 6.5
    Lifting or handling ....................  52 / 122.1+
    Shield mounted .........................  109 / 58.5
    Ship ...................................  114 / 173+
    Valve seat .............................  251 / 359+
        Internal combustion engine .........  123 / 188.8+
        Rotary .............................  251 / 314+
Portable Circular Saw ......................  30 / 360+
Portable Houses ............................  52 / 143+
Portfolio ..................................  190 / 900*
    Design .................................  D03 / 273+
    Financial, computer applications .......  705 / 36
    Locks ..................................  70 / 67+
Portland Cement  
    Compositions containing ................  106 / 713+
        Alkali metal silicate ..............  106 / 601+
        Containing .........................  106 / 601+
        Refractory .........................  501 / 124
    Making processes .......................  106 / 739+
Position Detectors Indicators and ..........  116 / 209+
    Markers ................................  116 / 209+
    Elevator ...............................  116 / 226
        Electric ...........................  187 / 397+
    Indexed printed matter .................  283 / 37+
    Liquid level gauge .....................  73 / 314
    Optical measurement of .................  356 / 614
        Global .............................  250 / 206.1+
        Local, of shaft position or ........  250 / 231.13+
        Speed ..............................  250 / 231.13+
    Railway switch stand ...................  246 / 401+
    Steering wheel .........................  116 / 31
    Train ..................................  246 / 122 R+
    Weaving shuttle ........................  139 / 341+
Positive Feedback Amplifier See  
    Regenerative, amplifier  
Post (See Column; Mast; Pole) .............  52 / 831+
    Architectural,design ...................  D25 / 126+
    Bearing ................................  114 / 169
    Binding electrical .....................  439 / 775+
    Drilling machine .......................  408 / 236
    Drivers ................................  175
        Continuous push ....................  254 / 29 R+
        Impact .............................  173 / 90+
    Electrical conductor ...................  174 / 45 R
    Hitching ...............................  119 / 788+
        Design .............................  D30 / 154
        Portable post ......................  119 / 786+
    Jacks ..................................  254 / 30+
    Kiln furniture .........................  432 / 253+
    Lamp or light combined .................  D26 / 67+
    Light support ..........................  362 / 431
    Openwork ...............................  52 / 633+
    Railway ................................  104 / 125
    Rotatable machine element ..............  74 / 504+
    Scaffold ...............................  248 / 351+
    Sign attachments .......................  40 / 607.01+
    Static mold ............................  249 / 51
    Steering ...............................  74 / 492+
    Tool ...................................  82 / 162
    Top ....................................  52 / 301
        Bed ................................  5 / 281
    Tower ..................................  52 / 651.01+
    Transmission tower .....................  D25 / 126+
    Velocipede .............................  280 / 281.1+
    Violin sound ...........................  84 / 277
    Window corner ..........................  52 / 204.57
Postage  
    Automated meters .......................  705 / 401
        Communication between two ..........  705 / 406
        Machines ...........................  705 / 406
        Data protection ....................  705 / 405
        Detecting stamp, weight of mail ....  705 / 406
        Digital signature generator ........  705 / 410
        Electronic camera ..................  705 / 406
        For business data processing .......  705 / 60
        Including printing or ..............  705 / 62
        Verification of mark ...............  705 / 62
        Reloading or recharging ............  705 / 61
    Including item weight ..................  705 / 407
    Organizing mail ........................  705 / 406
    Pre-authorized postage .................  705 / 410
    Pre-paid postage  
        Printing from user's location ......  705 / 402
    Printing ...............................  705 / 408
        Barcodes to identify mail ..........  705 / 410
    Rate updating ..........................  705 / 409
    Record keeping .........................  705 / 404
    Security features ......................  705 / 406
        Data protection ....................  705 / 405
    Specialized function ...................  705 / 410
        With display .......................  705 / 411
    Tallyinbg total cost of multiple .......  705 / 401
    Packages ...............................  705 / 401
Postal Card or Packet ......................  229 / 92.8
    Design .................................  D19 / 1+
Posthole Digger  
    Implement ..............................  294 / 50.6+
    Machine ................................  175
Pot (See Bowl; Jar; Kettle; Pan)  
    Burner .................................  431 / 331+
    Chamber ................................  4 / 479+
    Coffee .................................  99 / 279+
    Coffee or teapot strainers .............  210 / 473+
        Receptacle spout attached ..........  210 / 466+
    Cooking container ......................  D07 / 354+
    Dash (see dashpot)  
    Fire pot thermostats ...................  236 / 104
    Flower .................................  47 / 65.5
        Design .............................  D11 / 143+
    Furnace and metallurgical  
        Fire pot ...........................  126 / 144+
        Fire pot thermostats ...............  236 / 104
        Glue pot heater ....................  126 / 284
        Material heating furnaces ..........  432 / 156+
        Material heating holders ...........  432 / 252+
        Metal melting and casting ..........  164 / 335+
        Solder pot heater ..................  126 / 240
    Glue heating ...........................  126 / 284
    Holder .................................  16 / 435+
    Open top liquid heating vessel .........  126 / 373.1+
    Railway rail supports ..................  238 / 110+
    Railway signals ........................  246 / 475
    Vulcanizing ............................  425 / 283
Potassium (See Alkali Metal)  
    Chloride dissolver .....................  422 / 902*
Potato  
    Chip machine ...........................  99 / 403+
        Slicing combined ...................  99 / 353
    Chips ..................................  426 / 637
    Digger .................................  171
    Masher .................................  241
        Implements .........................  241 / 169.2
    Picker and hopper ......................  221 / 213+
    Planters ...............................  111 / 908*
    Preservation ...........................  426 / 321+
        Canning ............................  426 / 321+
        Coating ............................  426 / 289+
        Compositions .......................  426 / 637+
        Dehydration ........................  426 / 471+
        Refrigeration ......................  426 / 524
    Seed preparation .......................  47 / 88
    Washing machines .......................  15 / 3.1+
Potential  
    Regulators for dynamos .................  322 / 28
Potentiometer ..............................  338 / 68
Potentiometric Electrode  
    Assembling apparatus for making ........  29 / 729
    Chemical analysis, apparatus ...........  422 / 82.01
    Current generating thermometer .........  374 / 179
    With ...................................  374 / 179
    Galvanometer with ......................  324 / 98+
    Structure ..............................  338 / 68+
    Systems ................................  323 / 364
    Testing ................................  324 / 714
Pothead ....................................  174 / 74 R+
    Fluid or vacuum type ...................  174 / 19+
Potted Antenna .............................  343 / 873
Potted Electrical Device ...................  361 / 600
Pottery  
    Extruders ..............................  425 / 289+
    Molds ..................................  425 / 406+
    Potters wheels .........................  425 / 263+
    Potters wheels .........................  425 / 459
Potting Electrical Device ..................  264 / 272.11
Pouch (See Bag; Satchel)  
    Animal attachment for manure ...........  119 / 867+
    Colostomy ..............................  604 / 332+
    Diaper having ..........................  604 / 348
    Key containing .........................  206 / 37.1+
    Tobacco ................................  D27 / 185
Poultry  
    Butchering .............................  452+
    Coop ...................................  119 / 487+
        Collapsible ........................  119 / 491+
        Self-operating door ................  119 / 495
        Transporting enclosure .............  119 / 489+
    House ..................................  119 / 437+
        Revolving ..........................  119 / 438
    Husbandry ..............................  119
        Design .............................  D30
    Litter .................................  119 / 171+
    Vehicle transporter ....................  119 / 401
Pouncing Hat Machines ......................  223 / 20
Pounder  
    Meat ...................................  452 / 146+
    Textiles fluid treatment ...............  68 / 215+
Pouring  
    Articles with pouring spout ............  D07 / 312+
    Automatic weigher discharge ............  177 / 115
    Dispenser ..............................  222
    Receptacle filler ......................  141
Powder (See Coating; Dispensing;  
    Distributing)  
    Ammunition powder bags .................  102 / 282
    Ammunition powder forms ................  102 / 283+
    Baking .................................  425 / 526+
    Cans ...................................  220
        Dispensing .........................  222
    Coating composition ctg synthetic ......  525 / 934*
    Resin or natural rubber see ...........  525 / 934*
    Also 524-904 ...........................  525 / 934*
    Comminuted metal .......................  75 / 331+
    Cosmetic ...............................  424 / 69
        Compact ............................  D28 / 78
        Design .............................  D28 / 8
    Dispenser ..............................  604 / 58
    Duster aircraft borne ..................  244 / 136
    Duster insect killing ..................  239
    Dye ....................................  8 / 524+
    Engine driven by .......................  123 / 24 R
    Engine starting with ...................  123 / 183.1
    Explosive compositions .................  149
    Explosive thawer .......................  126 / 269
    Fluent solid applier pocketed, .........  401 / 200+
    Eg powder puff .........................  401 / 200+
    Formed by electrolysis .................  205 / 74
    Fusing and spraying ....................  239 / 79+
    Insect .................................  424
    Marking ground with ....................  111 / 26
    Medicator for applying .................  604 / 58
    Metallic powder containing .............  106 / 403+
    Trunks .................................  106 / 403+
    Metallurgy  
        Briquetting apparatus ..............  425 / 78+
        Comminuted metal ...................  419
            In blank .......................  428 / 546+
            In laminated blank .............  428 / 548+
        Heat treating, .....................  419 / 31
        Other than sintering ...............  419 / 31
            Loose metal powder .............  148 / 513
            Preconsolidated metal powder ...  148 / 514
        Making powders .....................  75 / 343+
        Pressing powder with other .........  29 / DIG 31
        Steps ..............................  29 / DIG 31
        Sintered stock materials ...........  75 / 228+
        Sintering ..........................  419
        Sintering then working .............  419 / 28
    Paper folder for containing ............  493 / 948*
    Photographic developer .................  430 / 499
    Powdered fuel ..........................  44 / 500+
    Puff  
        Box, cosmetic ......................  206 / 823*
            Design .........................  D28 / 91
        Machine for stitching ..............  112 / 470.17
    Sintering  
        Metals .............................  419
        Non-metals .........................  264 / 603+
        Non-metals .........................  264 / 319+
        With electric heat .................  219 / 149
    Toilet kit, powder & puff ..............  401 / 126+
    Toilet kit, toilet article eg ..........  132 / 293+
        Mirror included ....................  132 / 301+
    Train  
        Compositions .......................  149 / 14+
        Firecrackers .......................  102 / 361
        Fuses ..............................  102 / 275.1+
        Fuses blasting .....................  102 / 275.1+
        Pyrotechnics .......................  102 / 360
Powdered Fuel Burning  
    Fluid fuel combined ....................  110 / 261+
    Furnace structure ......................  110 / 263+
    Metal containing composition ...........  149 / 37+
    Metal cutting processes ................  148 / 194+
        Apparatus ..........................  266 / 48
    Powdered fuel feeders ..................  110 / 104 R+
    Shavings and sawdust ...................  110 / 102
    Water tube boiler combined .............  122 / 235.11
Power (See Engine; Motor; Device  
    Operated)  
    Alternate manual operator ..............  74 / 625
        With planetary gearing .............  475 / 3+
    Amplifier pentode ......................  313 / 300
    Delivery interrelated control ..........  477
    Factor control .........................  323 / 205
        In lamp or electronic tube .........  315 / 247
        Circuit ............................  315 / 247
        Measurement ........................  324 / 76.77+
    Hammer .................................  173 / 90+
        Forging ............................  72
    Measurement ............................  73 / 862.03+
    Pack  
        Conversion system ..................  363
        Radio receiver combined ............  455 / 343.1+
    Plants (see engine; motor) ............  60
        Aircraft ...........................  244 / 53 R+
        Artificial intelligence data  
        Processing see artificial  
        Intelligence  
        Dynamoelectric .....................  290
        Heating system combined ............  237 / 12.1+
        Internal combustion engine .........  123 / 3
        Combined ...........................  123 / 3
    Stop control ...........................  192 / 116.5
    Storing dynamos for equalizing .........  322 / 4
    Loads ..................................  322 / 4
    Supply  
        Combined with amplifier ............  330 / 199+
        Combined with push pull ............  330 / 123
        Amplifier ..........................  330 / 123
        Control with amplifier .............  330 / 127+
        Control with push pull .............  330 / 123
        Amplifier ..........................  330 / 123
        Or regulation systems ..............  323
        Polyphase with amplifier ...........  330 / 113+
    Supply vibrator ........................  307 / 150
        Invertor system ....................  363 / 110
    Tables and stands ......................  74 / 16
    Take off ...............................  74 / 11+
        Crane ..............................  212 / 172
    Vehicle (see motor vehicle; land .......  180
    Vehicle) ...............................  180
        Locomotive .........................  105 / 26.05+
        Marine propulsion ..................  440
        Occupant propelled land vehicle ....  280 / 200+
        Railway propulsion system ..........  104 / 287+
        Ship ...............................  114
        Soil working implements ............  172
        Combined ...........................  172
        Trackmans car ......................  105 / 86+
        Traction systems ...................  104 / 165+
        Truck ladders ......................  182 / 127
            Gear lifting means .............  182 / 68.3
            Winch lifting means ............  182 / 68.2
            With erection means ............  182 / 63.1+
Power Transmissions  
    Electricity ............................  307
        Miscellaneous space ................  307 / 149
        To a radio receiver ................  455 / 343.1+
Practical Joke Devices .....................  472 / 51+
Practice Devices  
    Barrels for ordnance ...................  89 / 29
    Billiards or pool game .................  473 / 2
    Bowling game ...........................  473 / 55+
    Cartridges .............................  102 / 444+
    Drop bombs .............................  102 / 395
    For game or sport ......................  473 / 422+
    Golf ...................................  473 / 131+
    Mines ..................................  102 / 401
    Projectile .............................  102 / 529
    Shell ..................................  102 / 498
    Telegraphy .............................  178 / 115
Practicing  
    For music ..............................  84 / 470 R+
        Exercising devices .................  84 / 465+
Praxinoscope ...............................  352 / 102
    With sound accompaniment ...............  352 / 2
Precious Stones  
    Changing colors by beams of light ......  250
    Producing synthetic ....................  501 / 86
        Compositions .......................  501 / 86
    Working ................................  125 / 30.01
Precipitation (See Decanter)  
    Actinide series compound ...............  423 / 249+
    Electrical  
        Distillation processes .............  201 / 19
        Including ..........................  201 / 19
        Distillation processes .............  203 / 40
        Including ..........................  203 / 40
        Electrophoresis or electro .........  204 / 450+
        Osmosis ............................  204 / 450+
        Gas separation apparatus ...........  96 / 15+
        Gas separation process .............  95 / 57+
        Separation or purification .........  204 / 554+
    Hydrometallurgy ........................  75 / 711+
    Leaching metals combined apparatus .....  266 / 101
    Liquid purification or separation ......  210 / 703+
    Metallurgical apparatus ................  266 / 170
    Sacchariferous solution  
        Impurities .........................  127 / 48+
        Sucrose ............................  127 / 47
    Suspended matter in ....................  405 / 74
    Marine environment .....................  405 / 74
Precoating Filter for Liquids ..............  210 / 777
    Apparatus ..............................  210 / 193
Precompressing (See Prestress)  
Preconditioning  
    Electrophotographic photoreceptor ......  399 / 127+
Predicate Calculus .........................  706 / 56
Predicate Logic ............................  706 / 56
Prednisolone ...............................  552 / 576
Prednisone .................................  552 / 576
Prefabricated Housing ......................  52
    Design .................................  D25 / 35+
    Subenclosure ...........................  52 / 79.1+
Preform ....................................  428 / 542.8
Pregnancy, Fertility .......................  436 / 510
Pregnandiol ................................  552 / 609
Pregnanes ..................................  552 / 557+
Pregnanolone ...............................  552 / 609
Pregnenolone ...............................  552 / 606
Preheaters  
    For boiler feed water ..................  122 / 412+
Preselector Amplifier ......................  330
Preservers Life ............................  441 / 80+
    Aquatic lifesaving devices .............  441 / 80+
    Buoyant devices ........................  441 / 88+
        Vests ..............................  441 / 106+
    Design .................................  D21 / 805
    Racks for ..............................  114 / 190
Preserves ..................................  426 / 639
    Butters ................................  426 / 616
Preserving & Preservation See ..............  422
    Material preserved .....................  422
    Agents .................................  252 / 380+
    Alcohols ...............................  568 / 701+
    Antiseptic composition .................  424
    Canning ................................  426 / 392+
        Closing ............................  53 / 285+
        Cooking after filling ..............  99 / 359+
        Filling ............................  141
        Filling and closing ................  53 / 266.1+
        Precooking and canning .............  99 / 356
    Channels for water control .............  405 / 15+
    Corpse .................................  27 / 11
    Egg preserving apparatus ...............  99 / 485+
    Ethers .................................  568 / 580+
    Fats and oils ..........................  554 / 2+
    Fermentation yeasts ....................  435
    Foods ..................................  426 / 321+
        Agent other than ...................  426 / 654
        Organophosphatide ..................  426 / 654
        Color treating .....................  426 / 262
        Fat or oil product .................  426 / 610
        Product having food preserving .....  426 / 133
        Agent ..............................  426 / 133
        Surface coating of solid food ......  426 / 310
        With a liquid ......................  426 / 310
    Halocarbons ............................  570 / 102+
    Hydrocarbons ...........................  585 / 1+
        With non-hydrocarbon additive ......  585 / 2+
    Hydrogen peroxide ......................  423 / 584
    Latex  
        Synthetic resin or natural  
        Rubber (see class 523, 524))  
            Natural rubber latex ...........  528 / 935*
    Preserved artifact .....................  428 / 542.4
    Rubber .................................  524
    Textile treatment ......................  8 / 490
Press ......................................  100
    Apparel ................................  223 / 52+
    Arbor ..................................  29 / 251
    Auto body crushers .....................  100 / 901*
    Automatic guards .......................  192 / 134
    Billiard cue ...........................  473 / 50
    Binding ................................  100 / 1+
    Box making .............................  493 / 52
    Can crusher ............................  100 / 902*
    Compacting ensilage with silo ..........  100 / 65+
    Computer controlled, monitored .........  700 / 206
    Concurrent pressing & conveying ........  100 / 144+
    Conveyer combined ......................  100 / 144+
    Cooker combined ........................  99 / 349+
        Cooler combined ....................  100 / 92+
    Design .................................  D15 / 123
    Die cutting and punching  
        Die processes and machines .........  83
        Sheet and bar punching .............  83
    Die expressing .........................  425 / 381.2
    Drain means for expressed liquid .......  100 / 104+
    Dryer ..................................  34 / 143+
    Dryer combined .........................  100 / 92+
    Fluid pressure actuated ................  100 / 269.01+
    For arc light electrodes ...............  425 / 113+
    For nailing and stapling ...............  227
    General purpose ........................  100
    Glass ..................................  65 / 305+
    Heater combined ........................  100 / 92+
    Interrelated components ................  100 / 353
    Laundry iron ...........................  D32 / 9
    Leather ................................  69 / 48
        Crease impressing ..................  69 / 2
        Forming combined ...................  69 / 8
        Seam ...............................  69 / 7
    Lid applying ...........................  53 / 287+
        With compacting of contents ........  100 / 54+
    Macaroni ...............................  425 / 289+
    Magnetic ...............................  100 / 917*
    Material triggered control .............  100 / 43+
    Materials treatment combined ...........  100 / 70 R+
        Heating, cooling or drying .........  100 / 92+
    Meat  
        Briquetting  
            Dynamic apparatus ..............  425
            Methods ........................  426 / 513
            Static apparatus ...............  249
        Tenderizers ........................  452 / 141+
    Metalworking ...........................  72
        Assembling and disassembling .......  29 / 700+
        Die cutting ........................  83
        Draw ...............................  72 / 347+
        Drill ..............................  408
        Drill press combined ...............  29 / 26 R+
        Extruding ..........................  72 / 253.1+
            Indirectly .....................  72 / 253.1
        File cutting .......................  76 / 19
    Methods ................................  100 / 35+
    Miscellaneous structure ................  100 / 214+
        Punch ..............................  83 / 651+
    Molding  
        Bread, pastry and confection .......  426 / 496+
        Bread, pastry and confection .......  425 / 98+
        Bread, pastry and confection .......  425 / 238+
        Computer controlled, monitored .....  700 / 197+
        Concrete, etc., blocks .............  425 / 253+
        Concrete, etc., blocks .............  425 / 356
        Cork or bung tapering ..............  144 / 284
        Foundry molds ......................  164 / 37+
        Glass ..............................  65 / 305+
        Glass blowing and ..................  65 / 229+
        Metal forging ......................  173
        Plastic block and earthenware ......  425
        Shoe heel ..........................  12 / 48
        Shoe sole blank ....................  12 / 21
        Shoe sole laying ...................  12 / 33+
    Paper pulp .............................  162 / 396+
    Paper web forming ......................  162 / 358.1+
        Belts for extended nip press .......  162 / 901*
        Paper forming member ...............  162 / 903*
        Paper pressfelts ...................  162 / 900*
        With specified seam structure ......  162 / 904*
        Woven fabric for drier section .....  162 / 902*
    Particulate material ...................  100
    Peat ...................................  44 / 630+
    Pelleter ...............................  100 / 903*
    Platens or pressure surfaces ...........  100 / 295+
    Plural diverse presses .................  100 / 137+
        With heating, cooling or drying ....  100 / 302
    Plural presses .........................  100 / 193+
    Portable receptacle lid applying .......  100 / 54+
    Printing ...............................  101
        Design .............................  D18 / 36+
    Reciprocating press construction .......  100 / 214+
    Safety device ..........................  100 / 341+
    Scrap paper ............................  100 / 914*
    Sectional chamber filter ...............  210 / 224+
        With means to add treating .........  210 / 204
        Material ...........................  210 / 204
    Sewing machines  
        Elements ...........................  112 / 235+
        Leather type .......................  112 / 60+
    Tennis racket ..........................  473 / 554
    Textile ironing or smoothing ...........  38
    Truss presses ..........................  100 / 913*
    Woodworking  
        Bending ............................  144 / 256.1+
        Cork and bung ......................  144 / 284
        Cork or bung tapering ..............  144 / 284
        Feed and presser devices ...........  144 / 252.1+
        Glue applying combined .............  156
        Methods ............................  144 / 381
        Veneer .............................  156 / 580+
Pressure  
    Aircraft pressure maintenance ..........  454 / 71+
    Bonding  
        Cold weld ..........................  228 / 115+
        Electric weld ......................  219 / 78.01+
    Compensating, support ..................  248 / 901*
    Compensator and conduit combined .......  138 / 26+
    Cooker .................................  220
        Automatic electric control .........  99 / 330
        Design .............................  D07 / 358
        Electric ...........................  219 / 440
    Distillation under .....................  203 / 73+
    Distillation under .....................  203 / 91+
    Equalizers (see pulsation devices) .....  138 / 26+
        Plural valves ......................  137 / 629+
        Pump ...............................  417 / 540+
    Feed  
        Burner .............................  431
        Conveyers ..........................  406
        Dispensing .........................  222 / 394+
        Lubricators ........................  184 / 57+
        Metal casting machine ..............  164 / 303+
        Pneumatic dispatch .................  406 / 148+
        Sprinkler or sprayer ...............  239
    Filter .................................  210 / 348+
        Closed circulating system ..........  210 / 167.01+
        Sectional chamber pressure type ....  210 / 224+
        With pressure responsive ...........  210 / 130+
        By-pass ............................  210 / 130+
        With pump ..........................  210 / 416.1
    Fluid actuator or operator see  
    Device operated, fluid operated,  
    Motor  
    Fluid pressure regulator ...............  D23 / 235
    Gas content testing ....................  73 / 19.05
    Gauge ..................................  73 / 700+
        Calibrating ........................  73 / 1.57+
        Design .............................  D10 / 85+
    Gun ....................................  124 / 56+
    Heat exchanger control .................  165 / 279+
    Mineral oils ...........................  208 / 357+
    Mineral oils ...........................  208 / 366+
    Nuclear reactor ........................  976 / DIG 166
    Regulator and control (see fluid  
    Pressure regulator and device  
    Associated therewith)  
        Boiler feed ........................  122 / 452
        Brake ..............................  188 / 105+
        Brake system .......................  303
        Concentrating evaporator ...........  159 / 2.1
        Dispensers .........................  222
        Distillation column ................  202 / 160
        Electrical separation or ...........  204 / 555
        Purification of liquid with ........  204 / 555
        Control responsive to sensed .......  204 / 555
        Condition ..........................  204 / 555
        Electrolytic cell combined .........  204 / 228.1+
        Electrolytic cell combined .........  204 / 229.4+
        Electrolytic cell combined .........  204 / 230.2+
        Fermentation processes .............  435 / 3
        Fire extinguisher ..................  169 / 5+
        Fluid heater .......................  236 / 24.5
        Gas distributing system ............  48 / 191
        Having both inlet and outlet .......  454 / 238
        Airways ............................  454 / 238
        Having inlet airway ................  455 / 255
        Having outlet airway ...............  454 / 340
        Inhaler ............................  128 / 204.18+
        Organ ..............................  84 / 356
        Piano ..............................  84 / 39+
        Pneumatic conveyer .................  406 / 12
        Pump ...............................  417 / 279+
        Resilient tire .....................  152 / 415+
        Testing ............................  73 / 1.71+
        Thermostat combined ................  73 / 199
        Vehicle ............................  454 / 70+
        Volume or rate of flow meters ......  73 / 199
        Combined ...........................  73 / 199
        Water heating system ...............  237 / 65
        Water purification by ..............  137 / 98+
        Chemical feeders ...................  137 / 98+
        X ray electrical system ............  378 / 108+
    Relieving devices  
        Degasifying apparatus ..............  96 / 155+
        Degasifying process ................  95 / 241+
        Fluid ..............................  137 / 455+
        Gas separator combined .............  55 / 309+
        Marine mine ........................  102 / 412+
        Seal for a joint or juncture  
            Dynamic gland ..................  277 / 514
            Dynamic lip ....................  277 / 552
            Other seal types ...............  277 / 928
        Testing and calibrating ............  73 / 1.72
    Responsive loading for a seal  
    For a joint or juncture  
        Blowout preventer ..................  277 / 324+
            Dynamic lip seal ...............  277 / 558
            Dynamic segmented ring .........  277 / 544
            Face or mechanical seal ........  277 / 387+
    Seal having fluid balancing feature ....  277 / 926
    Seal having fluid differential .........  277 / 927
    Feature ................................  277 / 927
    Tanks or chamber, high pressure ........  220 / 581+
    (See gas, holder)) ....................  220 / 581+
        Fire extinguisher ..................  169 / 71+
        Gas ................................  48 / 174+
        Inhalers ...........................  128 / 203.12+
    Thermolytic ............................  201 / 35
    Valve, pressure relief .................  137 / 455+
        Reducing, regulating pressure ......  137 / 505+
Prestressed Structures .....................  52 / 223.1+
    Facing sheet ...........................  52 / 222
Pretzel ....................................  D01 / 120
    Slip ...................................  425 / 323
Prevention (See Anti)  
    Backdraft  
        Backdraft preventer for inlet ......  454 / 259
        Backdraft preventer for outlet .....  454 / 359+
        Backdraft preventer for window .....  454 / 227
    Bank robbery ...........................  109 / 2+
    Blast or shockwave .....................  454 / 194
    Body catching rebound ..................  182 / 137+
    Button loss ............................  24 / 90.5
    Cable sag, endless .....................  254 / 388
    Condensation ice and frost  
        Aircraft ...........................  244 / 134 R
        Coating compositions ...............  106 / 13
        Compositions .......................  252 / 70
        Plants .............................  47 / 2
        Trolley ............................  191 / 62
        Window .............................  52 / 171.2+
        Window by ventilation ..............  454 / 198
            Rail-car, bus or trailer .......  454 / 93
            Vehicle ........................  454 / 121+
    Corona .................................  174 / 127
    Fire prevention ........................  169
        Receptacle attachment ..............  220 / 88.1+
        Textile treating apparatus .........  68 / 209
    Fraud or alteration  
        Check controlled apparatus .........  194 / 302+
        Coating ............................  427 / 7
        Locks ..............................  70 / 416+
    Leakage from gas pipes .................  48 / 194
    Lost motion  
        Gearing ............................  74 / 409
        Piano motion .......................  84 / 222+
    Magnetic compass deviation .............  33 / 356+
    Nuclear reactor damage .................  376 / 277
    Offset in printing .....................  101 / 416.1+
    Overwinding  
        Clock and watch key ................  81 / 467
        Clocks and watches .................  368 / 209
        Composite motor ....................  185 / 13
        Spring motor .......................  185 / 43
        Weight motor .......................  185 / 35
    Radon, by ventilation ..................  454 / 909*
    Railroad coupling vertical .............  213 / 153
    Disengagement ..........................  213 / 153
    Register overthrow .....................  235 / 131 R
    Safe breaking ..........................  109 / 26
    Scale ..................................  29 / 81.01+
    Secondary radiant emission .............  313 / 106+
    Skate retrogression ....................  280 / 11.201
    Switches  
        Arc ................................  218 / 1+
        Overfusing .........................  337 / 225+
        Unauthorized use ...................  200 / 43.01+
            Locked actuator ................  200 / 43.11+
            Removable actuator .............  200 / 43.04+
    Type casting squirt  
        Integral line ......................  199 / 53
        Separate type ......................  199 / 90
Prexinoscope ...............................  352 / 102
    With sound accompaniment ...............  352 / 2
Price Determination, Automated .............  705 / 400
Price Look-Up Processing ...................  705 / 20
Prediction  
    Financial, automated ...................  705 / 7.31
Prick Punch ................................  30 / 366
    Sheets or bars .........................  30 / 366
Pricker for Fruit ..........................  83
Pricking Shoe Soles ........................  83
Primary Battery ............................  429 / 122+
Prime Mover Dynamo Plants ..................  290
Primer and Priming  
    Explosive ..............................  102 / 200+
        Ammunition making with .............  86 / 32
        Cartridge combined .................  102 / 470+
        Layers or zones ....................  149 / 14
    Internal combustion engine .............  123 / 179.9
    Pump ...................................  417 / 435
        Rotary .............................  415 / 11
Primers ....................................  536 / 24.33
Primuline Azo Compounds ....................  534 / 800
Printed Electric Circuits Housing or .......  361 / 748+
    Mounting ...............................  361 / 748+
    Making  
        Combined in an amplifier ...........  330 / 66
        Mechanical manufacture .............  29 / 829+
        Photo chemical etching .............  430 / 311+
    Stock material .........................  428 / 901*
Printed Matter (See Books, Printers & ......  283
    Printing) ..............................  283
    Books, strips, & leaves ................  281
    Circuit stock ..........................  428 / 601
Printers and Printing ......................  101
    Adaptive printing ......................  358 / 3.24+
    Annular typewriter .....................  400 / 112+
    Antismut devices .......................  101 / 416.1+
    Attribute control of printed image .....  358 / 1.9
    Bag printing and making ................  493 / 187
    Bed & platen machines ..................  101 / 287
    Bi-level or text printing ..............  358 / 2.99
    Braille ................................  101 / 3.1+
        Typewriter .........................  400 / 109.1+
    Bread pastries lozenge cutting .........  425 / 289
    Combined ...............................  425 / 289+
    Calculator combined ....................  235 / 58 P+
        Connected with point of sale .......  705 / 24
        Device .............................  705 / 24
        Record controlled ..................  235 / 432
    Character generation ...................  358 / 1.11
    Check printing cash register ...........  235 / 3
        Automated ..........................  705 / 33
    Cigar or cigarette making ..............  131 / 284
    Cleaning attachments ...................  101 / 425
    Coating combined  
        Nonuniform coating processes .......  427 / 256+
    Coating implements & material ..........  401
    Supply .................................  401
    Coin-controlled print machines .........  101 / DIG 44
    Color forming phenomenom ...............  101 / DIG 29
    Combined with laminating apparatus .....  156 / 384+
        Methods ............................  156 / 277
    Contact photographic ...................  355 / 78+
    Control by code on plate ...............  101 / DIG 46
    Convertible printing press, eg, ........  101 / DIG 49
    Lithographic to letter press ...........  101 / DIG 49
    Cylinder ...............................  101
        Inkers .............................  101 / 353+
        Photo process making ...............  430 / 300+
        Revolving, print on ................  101 / DIG 39
        Work support grippers ..............  101 / 409+
    Data processing equipment ..............  D18 / 54
    Design .................................  D18 / 50+
        Toy (design) .......................  D21 / 518
    Devices hand ...........................  101 / 368+
    Drying flexible sheets and webs ........  34 / 618+
    Duplicating machines ...................  101 / 113
    Electrostatic force ....................  101 / DIG 37
    Endless printing belt ..................  101 / DIG 48
    Enhancement of printed image ...........  358 / 3.27
    Envelope printing and making ...........  493 / 187
    Equipment, design ......................  D18 / 50+
        Paper cutters ......................  D18 / 34.1+
        Stapling machines ..................  D18 / 34.1+
    Error correction of printed image ......  358 / 3.26
    Error diffusion in grayscale or ........  358 / 3.03+
    Halftone printing ......................  358 / 3.03+
    Formatting .............................  715 / 243+
    Golf ball, print on ....................  101 / DIG 40
    Halftone printing ......................  358 / 3.06+
    Hidden code or watermark printing ......  358 / 3.28
    Image generation or control ............  345 / 418+
    Including cryptographic printing or ....  705 / 62
    Verification of mark ...................  705 / 62
    Ink ....................................  106 / 31.13+
        Agitated in reservoir ..............  101 / DIG 34
        Axially reciprocating rollers ......  101 / DIG 38
        Thickness or density sensor ........  101 / DIG 45
        Transfer using one or more belt ....  101 / DIG 33
    Inkers .................................  101 / 335
    Intaglio ...............................  101 / 150
        And other printing means ...........  101 / DIG 43
    Key or wheel  
        Time recorder ......................  346 / 80+
        Typewriter .........................  400 / 165.1+
    Leads  
        Cutting and punching ...............  83
        Fillers ............................  101 / 402
        Handlers ...........................  276 / 34
    Lineup table ...........................  33 / 614+
    Lithographic ...........................  101 / 130+
    Member .................................  101 / 368+
        Collocating or aligning ............  33 / 614+
        Electrodeposition ..................  205 / 69
        Localized area electrolytic ........  205 / 640+
        Etching ............................  205 / 640+
        Localized area plating .............  205 / 127
        Numbering machine ..................  101 / 84+
        Selective or progressive ...........  101 / 109+
        Selective or progressive with ......  101 / 103
        Inker ..............................  101 / 103+
        Type setting and distributing ......  276 / 4
        Machine ............................  276 / 4
        With inker .........................  101 / 327+
    Metal leaf applied .....................  101 / DIG 31
    Metering blade position, automatic .....  101 / DIG 47
    Or remote control of ...................  101 / DIG 47
    Multi-level or grayscale printing ......  358 / 3.01+
    Multicolor .............................  101 / 171
    Offset  
        Bed and cylinder ...................  101 / 251+
        Intaglio ...........................  101 / 154
        Multicolor .........................  101 / 177
        Planographic multicolor ............  101 / 137
        Rotary .............................  101 / 217
        Rotary and bed cylinder ............  101 / 215
        Rotary planographic ................  101 / 142+
        Smut prevention ....................  101 / 416.1+
    On cloth by photography ................  430
    Output for point of sale devices .......  705 / 24
    Overlays and underlays see  
    Make-ready  
    Paper disc closure making ..............  493 / 962*
    Photographic ...........................  355
    Planographic ...........................  101 / 130
    Plate alignment on press ...............  101 / DIG 36
    Plate etching ..........................  216
    Postal meters ..........................  705 / 408
        Business data processing ...........  705 / 60
        Printing barcodes ..................  705 / 410
    Press attachment cutting  
        Punching ...........................  83
        Rotary cutter ......................  83 / 331+
    Projection photographic ................  355 / 18+
    Quoins .................................  254 / 40+
    Reflex photographic type ...............  430 / 395
    Rollers and track ......................  101 / DIG 35
    Rolling contact machines ...............  101 / 212
    Rule cutting ...........................  83 / 927*
    Rules ..................................  83
    Sheet folding, associating and .........  270 / 1.01+
    Silk screen ............................  101 / 114+
        Process ............................  101 / 129
    Sorting & ..............................  101 / 2
    Special article machines ...............  101 / 35+
        Article controlled operation .......  101 / DIG 30
    Stenciling .............................  101 / 114+
    Stereotype printing plate ..............  409 / 901*
    Stick ..................................  276 / 38+
        Collocating ........................  33 / 614+
    Surface ................................  101 / 453+
        Electrodeposition ..................  205 / 69
        Localized area electrolytic ........  205 / 640+
        Etching ............................  205 / 640+
        Localized area electroplating ......  205 / 127
        Photographic preparation ...........  430 / 300+
    Telegraph ..............................  178 / 23 R+
        Automatic ..........................  178 / 4
    Text/document ..........................  715 / 200+
    Textile process and compositions .......  8 / 445+
    Typecasting ............................  199
    Typesetting ............................  276
    Typewriter printing point indicator ....  400 / 709
    Typewriting machines ...................  400
    Web tensioning .........................  101 / DIG 42
    Weigher sets type ......................  177 / 13
Prism  
    Building lights ........................  359 / 591+
        Making by moulding .................  65
    Optical ................................  359 / 831+
    Telescope ..............................  359 / 399
Prison Bathrooms ...........................  4 / DIG 15
Pritch .....................................  452 / 185
Privy, Building Unit .......................  D25 / 16
Probability Computing ......................  700 / 93
Probang ....................................  606 / 106
Probes (for Detecting Animal ...............  536 / 24.31
    Nucleotide sequences) ..................  536 / 24.31
Probes (for Detecting Microbial ............  536 / 24.32
    Nucleotide sequences) ..................  536 / 24.32
Probes Magnetic ............................  600 / 11
Probes Radioactivity .......................  250 / 472.1
    For use with fluids ....................  250 / 336.1
    Geiger muller tube .....................  313 / 93
        With circuit .......................  250 / 374+
    Miscellaneous ..........................  250 / 336.1
    Neutron detector type ..................  376 / 153+
        With circuit .......................  250 / 390.01+
    Scintillation ..........................  250 / 361 R+
Procaine ...................................  560 / 49
    In drug ................................  514 / 535
Process Motion Picture Photography .........  352 / 38+
Prod  
    Animal .................................  D30 / 156+
    Electric ...............................  231 / 7
Producer Gas ...............................  48
    Boiler combined ........................  122 / 5
    Combustion furnace combined ............  110 / 229+
Product  
    Appraisal  
    Certification or verification  
        Automated ..........................  705 / 306
        Automated system for ...............  705 / 317
    Display on internet ....................  705 / 27.1+
    Rating or recommendation ...............  705 / 347
    Recall  
    Recycling or disposal  
    Repair or maintenance  
        Automated administration of ........  705 / 308
        Automated administration of ........  705 / 305
Product Identification  
    Using a point of sale terminal .........  705 / 23
Profile (See Pattern; Pattern  
    Control)  
    Cutter for turning .....................  407
        Lathe employing ....................  82 / 13
    Measuring ..............................  356 / 601+
    Optical tester or comparer .............  356 / 391+
Proflavine .................................  546 / 104+
Progesterone ...............................  552 / 607
    In drug ................................  514 / 177
Program (See Pattern Control)  
    Burner .................................  431 / 18+
    Clock alarm ............................  368 / 246
    Electric circuit maker & breaker .......  200 / 19.3+
        Retarded ...........................  200 / 33 R+
    Feeding devices for animals ............  119 / 51.13
    Fluid handling .........................  137 / 624.11+
    Furnace, solid fuel ....................  110 / 191+
    Heat exchange ..........................  165 / 267+
    Heating and cooling ....................  165 / 237+
    Liquid purification or separation ......  210 / 141+
    Machine mechanisms trips ...............  74 / 3.52
    Memorandum holders .....................  368 / 42
        Nuclear reaction combined ..........  376 / 217
    Refrigeration ..........................  62 / 157+
    Sewing machine .........................  112 / 470.01+
    Sighting ...............................  33 / 229+
    Signaling or indicating ................  116 / 22 R
        Code ...............................  116 / 18
        Electric lights, matrix ............  345 / 73
        Electric lights, monogram ..........  345 / 44+
        Electrical .........................  340 / 309.4+
        Electrical code ....................  341 / 173+
        Electrical traffic control .........  340 / 907+
    Sprayer ................................  239 / 69
    Valve ..................................  137 / 624.11+
Programmable  
    Aircraft control systems ...............  244 / 76 R+
    Calculator .............................  708 / 130+
    Digital computer system, general .......  714
Programmed Control  
    Artificial intelligence see  
    Artificial intelligence  
    Assembling machine .....................  29 / 701
    Boring or drilling machine .............  408 / 3
    Conveying apparatus ....................  198 / 349+
    Cutting machine ........................  83 / 76.1+
    Furnace, solid fuel ....................  110 / 191
    Heating apparatus ......................  432 / 51
    Metal deforming machine ................  72 / 7.1+
    Metal-fusion bonding ...................  228 / 7
    Metal-fusion bonding ...................  228 / 102
    Metallurgical apparatus ................  266 / 59
    Metallurgical apparatus ................  266 / 96
    Selective punch machine ................  234 / 13+
        Electrical code ....................  341 / 173+
    Toy vehicle ............................  446 / 436
    Typewriter  
        Carriage ...........................  400 / 279+
        Case-shift .........................  400 / 252+
        Format .............................  400 / 76+
        Format and type selection ..........  400 / 61+
        Liner ..............................  400 / 17+
        Sheet or web feed ..................  400 / 582+
        Type-face selection ................  400 / 70+
Project Management .........................  705 / 301
    Web feeder .............................  226 / 9
Projectiles  
    Amusement devices, aerial ..............  273 / 317+
    Design .................................  D22 / 115+
    Explosive containing ...................  102 / 473
    Explosively propelled ..................  102 / 501+
    Fire escape ............................  182 / 50
    Flechettes .............................  244 / 3.24+
    Games  
        Aerial .............................  273 / 317+
        Simulated missles ..................  463 / 2+
        Surface ............................  273 / 108+
    Launched from toy vehicle ..............  446 / 435
    Lubricating ............................  102 / 511
    Making .................................  86 / 51
    Measuring and testing ..................  73 / 167
    Mechanical devices .....................  124
    Shell or cartridge loading .............  86
    Stabilization ..........................  244 / 3.1+
    Thrown detonating toy ..................  446 / 400
Projection or Projector See Thrower  
    Aerial game projectile  
        Catcher combined ...................  473 / 505+
        Mechanical or centrifugal for ......  124
        Player-powered striking type for ...  473 / 516+
        Target combined ....................  273 / 348.1+
    Comminution  
        Centrifugal projection .............  241 / 275
        Fluid ..............................  241 / 39+
    Electric lamp ..........................  313
    Film ...................................  353
        Design .............................  D16 / 221+
        Motion picture .....................  352 / 233
        Slide ..............................  40 / 513
        Toy (design) .......................  D21 / 514
    Fire escape ............................  182 / 50
    Grenade  
        Firearm combined ...................  42 / 105
        Hand ...............................  102 / 483+
        Ordnance combined ..................  89 / 1.1
    Gymnastic ..............................  482 / 26+
    Illumination  
        Electric bulbs .....................  313
        Electrophotographic ................  399 / 177+
        Lantern ............................  362 / 257+
        Protector combined .................  362 / 317+
        Reflectors .........................  362 / 341+
        Reflectors and refractors ..........  362 / 327+
        Combined ...........................  362 / 327
        Refractors .........................  362 / 326+
    Mechanical .............................  124
    Microfilm printer  
        Electrophotographic ................  399 / 177+
    Microfilm reader .......................  D16 / 225+
    Motion picture .........................  352
        Film winding .......................  242 / 324+
        Screen .............................  359 / 443+
        Winding & reeling means ............  242 / 324+
    Optics of image projection .............  353
    Photographic printing ..................  355 / 18+
    Photographic viewer ....................  D16 / 221+
    Railway mail delivery ..................  258 / 5+
    Screen .................................  359 / 443+
    Surface projectile .....................  273 / 129 R
        Ball game combined .................  273 / 119 R+
    Vehicle fender  
        Forward ............................  293 / 24+
        Side ...............................  293 / 21+
    Weight reading .........................  177 / 178
Prolamines .................................  530 / 372
    Compositions containing ................  106 / 161.1
    Zein ...................................  530 / 373
Promoter ...................................  536 / 24.1
Prong and Pronged Devices See  
    Impaling; point  
    Butchering hangers .....................  452 / 196
    Electrical connectors ..................  439
        Electric plug ......................  439
        Electronic tube base ...............  439 / 611+
        Lamp base ..........................  439 / 611+
    Nails  
        Heads ..............................  411 / 439+
        Points plural ......................  411 / 457+
Prontosil ..................................  534 / 676
Prontyllin .................................  564 / 86
Proofreading Devices .......................  281 / 51
Prop (See Brace) ..........................  248 / 351+
    Awning outriggers ......................  160 / 45+
    Bicycle ................................  280 / 293+
    Clothesline ............................  248 / 353
    Draft pole .............................  278 / 87
    Flower .................................  47 / 44+
    Ladders ................................  182 / 165+
        Collapsible ........................  182 / 156+
        Hinged extension ...................  182 / 163
        Separable extension ................  182 / 22+
        Wheeled ............................  182 / 16
    Scaffolds building supported ...........  182 / 87
    Shocker ................................  56 / 431
    Thill support ..........................  278 / 85
    Tree ...................................  47 / 43
    Trunk lid ..............................  190 / 34
Propeller (See Impeller) ..................  416
    Aircraft combined ......................  244 / 62+
        Stabilizing ........................  244 / 92
    Design .................................  D12 / 214
    Locomotive combined ....................  105 / 66
    Making, by milling .....................  409 / 120
    Power plant x-art ......................  60 / 904*
    Screws .................................  416 / 176
    Ship combined ..........................  440
        Buoyant ............................  440 / 98+
        Chain ..............................  440 / 95+
        Oscillating ........................  440 / 13+
        Portable ...........................  440 / 53+
        Reciprocating ......................  440 / 13+
        Screw ..............................  440 / 49+
    Testing ................................  73 / 147
    Toy ....................................  446 / 36+
        Airplane combined ..................  446 / 57+
Propicillin ................................  540 / 341
Propiolic Acid .............................  562 / 598
Propionic Acid .............................  562 / 606
Proportional  
    Counter ................................  250 / 374+
        Geiger muller tube .................  313 / 93+
        Radioactivity ......................  250 / 336.1
        Scintillation ......................  250 / 361 R+
        Tube structure .....................  376 / 153+
    Feeding  
        Automatic ..........................  431 / 90
        Dispenser automatic control ........  222 / 57
        Dispensing from nonserial traps ....  222 / 426+
        Dispensing from plural .............  222 / 134
        Containers .........................  222 / 134
        Dispensing from plural outlets .....  222 / 482+
        Fluid distribution .................  137 / 87.01+
        Gas & air mixer for burner .........  431 / 354
            Automatic ......................  401 / 90
        Mortar mixer .......................  366 / 16+
        Mortar mixing process ..............  366 / 8
        Water purification .................  210 / 101
    Measuring  
        Flow meter .........................  73 / 202+
        Gauge point markers ................  33 / 663+
        Proportional dividers ..............  33 / 558.02
Proportioner, Rectangular ..................  33 / DIG 9
Propositional Logic ........................  706 / 57
Propulsion Devices and Systems  
    Aircraft ...............................  244 / 62+
    Ammunition and explosive devices  
        Design .............................  D22 / 112
        Land mines .........................  102 / 362
        Propelling charge combined .........  102 / 374+
        Pyrotechnic rocket .................  102 / 347+
    Electric of railway cars ...............  104 / 288+
    Land vehicles  
        Convertible ........................  280 / 7.15+
        Runner .............................  280 / 12.1+
        Simulations ........................  280 / 828+
        Skates .............................  280 / 11.115
        Wheel propelled ....................  280 / 3
        Wheeled ............................  280 / 200+
    Marine .................................  440
        Manual power .......................  440 / 21+
    Motor vehicles .........................  180
    Propellers .............................  416
    Railway  
        Cable ..............................  104 / 173.1+
        Car ................................  104 / 287+
        Locomotives ........................  105 / 26.05+
        Switches and signals ...............  246
    Reaction motors ........................  60 / 200.1+
    Store service  
        Cable propulsion systems ...........  186 / 14+
        Self propelled car systems  
        Single impulse systems .............  186 / 8+
Prospecting (See Measuring; Testing) ......  73 / 152.01+
    Acoustic vibratory or seismic  
    Wave (see seismographs and  
    Seismometers)  
    Chemical anaylsis with  
        Apparatus ..........................  422 / 50+
        Methods ............................  436 / 25
    Earth boring combined ..................  175 / 58+
    Electrical .............................  324 / 323+
        Radar ..............................  342 / 191+
    Neutron using ..........................  250 / 253+
    Radiant energy .........................  250 / 253+
    Radioactive using ......................  250 / 253+
    Sound using ............................  181
    X ray using ............................  250 / 253
Prostatic Resector (See Resector)  
Prosthetic Article, Design .................  D24 / 155+
Prosthetic Article, Utility ................  623
    Coating ................................  427 / 2.1+
Prostoglandin Acids ........................  562 / 503
    Esters .................................  560 / 121
Protection (See Cover; Fender;  
    Prevention)  
    Against electrolytic earth currents ....  205 / 724+
    For electric railways ..................  205 / 724+
    Against radiation damage ...............  376 / 277
    Ankle or foot protector ................  D29 / 121.2
    Antiabrasion or protective layer .......  430 / 961*
    Arm guard ..............................  D29 / 120.1+
    Baking food ............................  126 / 22
    Barrel bung ............................  217 / 114
    Bonnets for animals ....................  54 / 80.1
    Book ...................................  281 / 20
    Building ...............................  52
        Animal blocker .....................  52 / 101
        Coating ............................  52 / 515+
        Earth quake ........................  52 / 167.1
        Earth supported coping .............  52 / 102
        Exterior flashing ..................  52 / 58+
        Marker or monument .................  52 / 103
        Metal monument markers and .........  52 / 102
        Guards .............................  52 / 102+
        Pole shell .........................  52 / 834+
        Process ............................  52 / 741.3
        Safes and banks ....................  109
        Snow stop ..........................  52 / 24+
        Tubular edger ......................  52 / 244
        Window .............................  52 / 171.3
    Burner heat protector ..................  431 / 350
        Automatic ..........................  431 / 23
    Casings  
        For cigars .........................  206 / 242+
        For watch movements ................  206 / 18
    Clock key with dust guard ..............  81 / 123
    Closure edge ...........................  49 / 462
    Collapsible steering post ..............  280 / 777
    Drill rod  
        Applying well protector to .........  29 / 236
        Guide or slide for .................  175 / 325.1+
    Electric devices  
        Anti-inductive structures ..........  174 / 32+
        Arc lamps liquid electrode .........  313 / 164
        Circuit breaker arc ................  318 / 1+
        Conductors and insulators ..........  174
        Connector cord terminal ............  439 / 135+
        Demagnetizing ......................  361 / 267+
        Discharging static charges .........  361 / 212+
        Implosion of tubes .................  445 / 8
        Lightning arrester .................  361 / 117+
        Lightning arrester and thermal .....  337 / 28+
        Current switch .....................  337 / 28+
        Lightning conductors ...............  174 / 2+
        Lightning rods .....................  174 / 3
        Meter circuit ......................  324 / 110
        Plural terminal insulator rod ......  174 / 179
        Type ...............................  174 / 179
        Railway right of way ...............  246 / 121
        Ray energy shields .................  250 / 515.1
        Safety systems .....................  361 / 1+
        Shock hazard .......................  174 / 5 R
        Signal box key .....................  340 / 302
        Signal system circuit ..............  340 / 292
        Maintenance ........................  340 / 292
        Telegraph system circuit ...........  178 / 69 R
        Maintenance ........................  178 / 69 R
        Telephone ..........................  379 / 412+