PATENTS   
Patents > Guidance, Tools, and Manuals > Classification > USPC Index
    Class Numbers & Titles   | Class Numbers Only   | USPC Index   | International   | HELP  
You are viewing an Index to the USPC.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

View as PDF


E-Layers in Thermo Nuclear Reactions .......  376 / 126
Ear  
    Coupling detachable janney type ........  213 / 157
    Guards .................................  2 / 455+
        Design .............................  D29 / 112
        Surgical ...........................  128 / 857+
    Hair cutters ...........................  30 / 29.5
    Pieces  
        Eyeglass with protective ...........  351 / 122
        Speaking tube combined .............  181 / 20
        Telephone ..........................  381 / 385
            Design .........................  D14 / 249
    Plug ...................................  D24 / 106
    Receptacle  
        Bail ...............................  220 / 773+
        Wooden bucket ......................  217 / 126
    Surgical treatment electrical ..........  607 / 136
    Syringes ...............................  604 / 187+
    Trolley support ........................  191 / 43+
        Insulator ..........................  191 / 42
    Trumpets ...............................  181 / 129+
Earmuff ....................................  2 / 209
    Design .................................  D29 / 112
Earplug ....................................  D24 / 106
Earring ....................................  63 / 12+
    Design .................................  D11 / 40+
Earth (See Type of Earth Working  
    Equipment)  
    Boring .................................  175
        Compositions .......................  507 / 100+
    Carrier wave communication system ......  455 / 40
    Combustion in situ .....................  166 / 256
    Electric current through ...............  166 / 248
    Electrolyte or conductor in ............  429 / 47
    Batteries, having earth feature ........  429 / 47
    Engineering ............................  405
        Caissons ...........................  405 / 8+
        Diving .............................  405 / 194
        Dry docks ..........................  405 / 4+
        Earth control ......................  405 / 258.1+
        Marine ways ........................  405 / 2
        Pipe and cable laying ..............  405 / 154.1+
        Ship caissons ......................  405 / 12+
        Stable structures in shifting ......  405 / 229+
        Media ..............................  405 / 229
            Marine structures ..............  405 / 195.1
        Tunnel .............................  405 / 132+
        Underground fluid storage ..........  405 / 53+
        Water control ......................  405 / 52+
    Excavating .............................  37
    Getter for lamps etc ...................  252 / 181.7
    Grounds ................................  174 / 6+
    Hazardous or toxic waste ...............  405 / 129.1+
    Containment ............................  405 / 129.1+
    Induction compass ......................  33 / 361+
    Metals preparation  
        Electrolytic .......................  204 / 194+
        Pyrometallurgy .....................  75 / 605+
    Mining of in situ disintegration of ....  299
    Hard material ..........................  299
    Planting ...............................  111
    Pulse or digital communications ........  375 / 218
    Roadway stabilization ..................  404 / 76
    Sciences computerized, monitored .......  702 / 2+
    Stabilizing for mining .................  299 / 11
    Transmission teledynamic systems .......  455 / 68
    Unearthing plants or buried objects ....  171
    Wells ..................................  166
    Working ................................  172
Earthenware  
    Apparatus for shaping ..................  425
    Decorating .............................  427 / 256+
        Final coating nouniform ............  427 / 269
        Nonuniform coating .................  427 / 287
        Plural nonuniform coating ..........  427 / 266
    Glazing apparatus ......................  118
Earthing See Grounds Electric ..............  174 / 6+
Earthquake Proof Construction ..............  52 / 167.1
Earthquake Recorders .......................  346
    Seismographs  
        Electrical .........................  367 / 115
        Mechanical .........................  181
Earthworking ...............................  172
    Excavating .............................  37
Earthworm Agitator  
    Electric  
        Earth grounds ......................  174 / 6+
        Electrocuting ......................  43 / 98+
        Prods ..............................  47 / 1.3
        Trapping ...........................  43 / 58+
Earvent or Drain ...........................  606 / 109
Easel ......................................  248 / 441.1+
    Body supported .........................  248 / 444
    Collapsible ............................  248 / 460+
    Copyholder .............................  248 / 441.1+
        Advanceable copytype ...............  40 / 342+
        Line guide type ....................  40 / 352+
    Painters ...............................  248 / 444+
    Photographic enlarging  
        For original .......................  355 / 75+
        For photosensitive paper ...........  355 / 72+
    Seat with ..............................  D06 / 335+
    Wall mounted ...........................  248 / 447.1+
    Watch and clock ........................  248 / 442
Easy Out Extractor .........................  81 / 436+
Eaves Trough ...............................  52 / 11+
    Supports ...............................  248 / 48.1+
Ebonite ....................................  525 / 332.6
    Chemical aspects of producing ..........  525 / 332.6
Ebullioscope ...............................  73 / 53.01+
Eburnamonine ...............................  546 / 50
Eccentric ..................................  74 / 570.1+
    Adjustment of frictional gearing .......  476 / 61
    Belt tightener .........................  474 / 112
    Chucks and sockets .....................  279 / 6
    Drive mechanical movement ..............  74 / 116+
    Drive shaft for gearing ................  74 / 390
    Gearing ................................  74 / 393
        Planetary ..........................  475 / 162+
    Instruments ............................  33 / DIG 8
    Pivot cutter ...........................  30 / 104
    Weight wheeled toy .....................  446 / 458
    Wheel mounts vehicle ...................  280 / 229
Ecgonine ...................................  546 / 131
Echo Sounding ..............................  367 / 87
Economics Teaching .........................  434 / 107+
Economizers  
    Feed water .............................  122 / 412+
Ecraseur ...................................  606 / 135+
Edge (See Border; Cutter)  
    Beading metal sheet ....................  72 / 102+
    Beveling pencil sharpener ..............  144 / 28.2
    Binding and covering ...................  29 / 243.58
    Binding or protector  
        Skirt garment ......................  2 / 222
    Coating method .........................  427 / 284+
    Curling by bending rolls ...............  72 / 102+
    Cutter .................................  83 / 425.2+
    Fabric bed bottom ......................  5 / 192
    Flanging metal .........................  72 / 352+
    Grinding lenses (see templet)  
    Guarded cutting  
        Cutlery ............................  30 / 286+
        Manicure cutlery ...................  30 / 27
        Razor ..............................  30 / 51+
    Hand gardening tool ....................  172 / 371
        Design .............................  D08 / 1+
    Indenting shoe sole ....................  12 / 32
    Knitted garment antiravel portion ......  66 / 172 R+
    Mattress ...............................  5 / 739
    Panel e.g. table top ...................  52 / 782.2+
        Resilient strip ....................  52 / 800.1+
        Retainer ...........................  52 / 764+
    Reinforcing  
        Laminated strand ...................  156 / 166
        Metallic container .................  220 / 640+
    Runner mill comminutor .................  241 / 107+
    Serrating  
        Paper box making ...................  493 / 56+
        Tool sharpener .....................  76 / 89.1
    Stays pivoted ..........................  24 / 267
    Tool clamp for abrading ................  451 / 367+
    Trim strips ............................  52 / 716.1+
    Trimming stock for apparel .............  428 / 122+
    Upholstery trim ........................  428 / 123
    Winding flat wire ......................  72 / 135+
    Wire fabric ............................  245 / 10
Edgewise Sheet-Metal Bender ................  72 / 411
Edible Foodstuffs ..........................  D01
Education Administration  
    Automated system .......................  705 / 326+
    Container holder,edible ................  D01
Education and Teaching .....................  434
    Appliance design .......................  D19 / 59+
    Artificial intelligence ................  706 / 927*
    Blocks & cards .........................  434 / 403+
    Cryptography ...........................  434 / 55+
    Display panel, chart, or graph .........  434 / 430+
    Erasable surfaces ......................  434 / 408+
    Keyboard operation .....................  434 / 227+
Effervescent Tablets  
    Medicine ...............................  424 / 43+
Egg  
    Beater .................................  366 / 343+
    Breaker or cracker .....................  99 / 568+
    Candling ...............................  356 / 52+
        Testing instrument .................  D10 / 48
    Carton  
        Design .............................  D09 / 757+
        Making .............................  493 / 52+
        Paper, compartmented box ...........  206 / 521.1+
            X-art collection ...............  493 / 913*
        Paperboard .........................  206 / 521.1+
        Wooden .............................  217 / 18+
    Cleaning ...............................  134
        Brushing or scrubbing ..............  15 / 3.1+
        By abrading ........................  451 / 103+
    Compositions and processes .............  426 / 614+
    Cooker  
        Automatic control ..................  99 / 336
        Boiler .............................  99 / 403+
        Supports combined ..................  99 / 440
    Cup ....................................  211 / 14
    Cutting and separating  
        Apparatus ..........................  99 / 498
        Processes ..........................  426 / 299+
    Dyeing .................................  426 / 252
    Incubator ..............................  119 / 311+
        Brooder combined ...................  119 / 301
    Nest medicated .........................  119 / 348
    Packaging wrapping and casing ..........  426 / 298
    Powdered ...............................  426 / 614
    Preservation ...........................  426 / 298+
        Apparatus ..........................  99 / 467+
        Coating ............................  426 / 289+
        Dehydration ........................  426 / 471+
        Hermetic sealing ...................  426 / 298+
        Packing in liquids and powders .....  426 / 392+
        Refrigeration ......................  426 / 524
    Production .............................  119 / 6.8
    Racks ..................................  211 / 14+
    Separators .............................  99 / 497
    Shaker-mixer ...........................  D07 / 300.1
    Sorting ................................  209 / 510+
    Tester .................................  73 / 432.1
        Candling ...........................  356 / 52+
        Electrical .........................  324
        Specific gravity ...................  73 / 32 R
    Treatment ..............................  426 / 614
        Altering normal development ........  119 / 6.8
    Turner .................................  99 / 644
        Implement ..........................  294 / 7+
        Incubator tray type ................  119 / 323+
Ejecting or Ejector  
    Article dispensing magazine with .......  221 / 208+
        Stacked card or sheet ..............  312 / 50+
    Bale ...................................  100 / 218
    Bobbin and cop winding with ............  242 / 473.9
    Boiler blowoff .........................  122 / 384
    Conveyor bucket discharging ............  198 / 703+
    Convolute winding ......................  242 / 533+
    Cowl ventilator outlet .................  454 / 39+
        Windvane ...........................  454 / 22+
    Cutlery combined with material .........  30 / 128
    Embalming ..............................  27 / 24.1
    Envelope machine with ..................  493 / 268
    Firearms ...............................  42 / 25
        Upward tilting breech ..............  42 / 47+
    Fluid sprayer with collapsible .........  239 / 328
    Holder .................................  239 / 328
    Furnace smoke box spark ................  110 / 127
    Grain binder with ......................  56 / 449
    Ingot strippers ........................  164 / 405
    Jet pump ...............................  417 / 151+
    Mechanism for key ......................  70 / 388
        With key operating mechanism .......  70 / 414
    Medicator gas ..........................  604 / 23+
        Metal castings .....................  164 / 344+
    Molds with fluent hardening ............  249 / 66.1
    Material forming .......................  249 / 66.1+
        Plastic forming ....................  425 / 422
        Plastic forming ....................  425 / 436 R+
        Type casting .......................  199 / 80+
    Movable dispensing pockets with ........  222 / 216+
    Parachute flare carrying ...............  102 / 340
    Phonograph record holder ...............  312 / 9.11+
    Plastic die expressing with ............  425 / 381.2
    Pottery machines with ..................  425 / 263+
    Pottery machines with ..................  425 / 459+
    Power plant exhaust treatment ..........  60 / 685+
    Punch implement ........................  30 / 368
    Punch press ............................  83 / 123+
    Pyrotechnic device with article ........  102 / 357
        Rocket .............................  102 / 351
    Receptacles  
        Dispensing type ....................  222
        Non refillable bottles .............  215 / 16
        Pocket safes or ticket cases .......  221 / 208+
        Receptacle filling charge ..........  141 / 249
    Saliva .................................  433 / 91
    Self unloading vehicles with ...........  414 / 506
    Sewing machine bobbin ..................  112 / 180
    Sheet cutting dies with blank ..........  83 / 123+
    Sheet cutting dies with blank ..........  83 / 652+
    Sheet metalware die shaping with .......  72 / 344+
    Ship bilge discharge ...................  114 / 184+
    Special tools ..........................  29 / 700+
        Stereotype casting device with .....  164 / 145
    Tobacco smoking device with ............  131 / 182+
    Type casting mechanisms ................  199 / 60+
    Integral line with .....................  199 / 60+
    Type setting machine with ..............  276 / 12+
Elastic (See Spring)  
    Band guns and projectors ...............  124 / 17+
    Electrical cord ........................  174 / 69
    Extension devices ......................  267 / 69+
    Fabric (see fabric) ...................  442 / 182+
        Bed bottom .........................  5 / 186.1+
    Fastener, elastometric .................  269 / 907*
    Shoe upper .............................  36 / 51
    Stocking ...............................  2 / 239+
        Knitted ............................  66 / 178 A+
        Surgical ...........................  602 / 62+
    Strand .................................  57 / 200+
        Core covering processes ............  57 / 3+
        Covered core .......................  57 / 225
        Making by spinning twisting ........  57 / 3+
Elbow  
    Bending ................................  72 / 369
    Conduit electric .......................  174 / 81
    Coupling pipe ..........................  285 / 179+
Electret ...................................  307 / 400
    Gas separation .........................  55 / DIG 39
    Making .................................  29 / 886
    Static information storage .............  365 / 146
    Telephone transmitter ..................  381 / 173
Electric & Electricity  
    Actuation of artificial body member ....  623 / 24+
    Amplifiers .............................  330
    Apparatus, demonstrating ...............  434 / 379
    Arc (see arc, electric)  
    Bandaging ..............................  602 / 2
    Batteries  
        Battery & condenser charging & .....  320
        Discharging ........................  320
        Boxes for ..........................  429 / 96+
        Electro chemical ...................  429
        Thermo electric or photoelectric ...  136
    Bearings, magnetic supports ............  310 / 90.5
    Bells ..................................  340 / 392.1+
    Binding posts ..........................  439
        Terminal boards ....................  439 / 709+
    Blankets and pads ......................  219 / 212
    Block signaling systems for ............  246 / 20
    Railways ...............................  246 / 20+
    Board games ............................  273 / 237+
    Boiler .................................  392 / 441+
    Boiler .................................  392 / 325+
    Brake  
        Electrically operated ..............  188 / 158+
            Frictionless ...................  310 / 92+
    Bridge networks ........................  323 / 365
        Wave filter ........................  333 / 170
    Cabinet combined with electrical .......  312 / 223.1+
    Features ...............................  312 / 223.1+
    Cable (see cable, electric) ...........  174
        Composite cable molding ............  425 / 505
        Connections or joints ..............  174
            Forming tool ...................  7 / 107+
        Support ............................  248 / 49+
    Candlelabrum ...........................  D26 / 24+
    Capacitor devices ......................  361 / 271+
    Car propulsion systems .................  104
    Cell (see cell, electric)  
    Chair, eg electrocution ................  607 / 1+
    Cigar or cigarette lighter .............  219 / 260+
    Circuit maker or breaker see ...........  200
    Circuit; switch ........................  200
    Clock ..................................  368 / 76+
    Clutches  
        Electric motor and clutch ..........  477
        Control ............................  477
        Electric operator ..................  192 / 84.3+
            In automatic type ..............  192 / 40
        Torque transmitting ................  310 / 92+
        Frictionless .......................  310 / 92+
    Coating processes ......................  427 / 58
    Coaxial cable  
        Electronic tube combined with ......  315 / 39
        Transmission lines .................  333 / 243+
        With fluid or vacuum ...............  174 / 28+
    Coil winding ...........................  242 / 430+
    Compositions  
        Conductive or emissive .............  252 / 500+
    Computer controlled, monitored item ....  700 / 286+
    Computers & data processing systems ....  703
    Condensers (see condenser) ............  361 / 271+
        Making .............................  29 / 25.41+
    Conductor (see conductor)  
        Conduits and tubes .................  174
        Insulators .........................  174
        Making or joining ..................  156 / 47+
        Running lengths ....................  219 / 85.1+
        Structure ..........................  174
        Transmission to moving object ......  191 / 1 R
        Transmission to vehicles ...........  191
    Conduits & housing (see conduits)  
        Electrical service meters ..........  361 / 659+
        Housed switchboards ................  361 / 601+
        Outlet or junction box type ........  220 / 3.2+
        Pipe joints ........................  285
        Pipes ..............................  138
        Structure ..........................  174
    Connectors (see connection) ...........  439
        Design .............................  D13 / 133+
        Winding by orbital guide ...........  242 / 442
        Winding by rotating connector ......  242 / 439+
        Winding implement ..................  242 / 442
        Wire nuts ..........................  174 / 87
    Contact (see contact, electrical)  
    Contact brush  
        Making by plastic operation ........  264 / 104+
        Making methods .....................  29 / 826+
        Motor or generator .................  310 / 248+
        Moving arc lamp electrode ..........  314 / 129
        To moving object or vehicle ........  191
    Contact metal ..........................  75
        Composite ..........................  428 / 929*
    Container for removable components .....  206 / 701+
    Control of dispensers ..................  222 / 52+
        Interlocked with discharge .........  222 / 75
        Guide or support ...................  222 / 75
    Controller (see control or  
    Controller, electric)  
    Conversion systems .....................  363
        Current conversion .................  363 / 13+
        Frequency conversion ...............  363 / 157+
        Phase conversion ...................  363 / 148+
    Cooking by current through food ........  99 / 358
    Cooling produced by ....................  62 / 3.1+
    Cord  
        Storing ............................  191 / 12 R+
    Course control .........................  244 / 175+
    Current distribution ...................  307
    Current producing apparatus, ...........  429
    Product, process .......................  429
    Demagnetizers ..........................  361 / 267
    Depilatories ...........................  606 / 43
    Design .................................  D13
        Air conditioning ...................  D23 / 351+
        Clocks .............................  D10 / 1+
        Fan ................................  D23 / 370+
        Heating ............................  D23 / 314+
        Lamps ..............................  D26
        Measuring testers ..................  D10 / 75+
        Medical xray .......................  D24 / 158
        Photo chemical etching .............  430 / 313+
        Soldering iron .....................  D08 / 30
    Diagnostics medical ....................  600 / 300
    Distribution ...........................  D13
    Distributor (see distributor,  
    Electric)  
    Door or gate ...........................  49 / 59
    Drill ..................................  30 / 500
    Electrical device making processes .....  29 / 592.1
    Electrical power conversion systems ....  363
    Electrical systems & devices ...........  361 / 600
    Electrical systems & devices ...........  361 / 837
    Electrocardiographs ....................  600 / 510
    Electrolytic device ....................  361 / 500+
        Batteries ..........................  136
        Chemistry, electrical & wave .......  204
        Energy .............................  204
    Electromagnetic operation ..............  335
        Coating utilizing ..................  427 / 457+
        Ion plating or implanting ..........  427 / 523+
    Electronic tube (see electric  
    Space discharge devices)  
    Electrothermally or thermally ..........  337
    Actuated switches ......................  337
    Electrothermic metallurgical ...........  75 / 10.1+
    Processes ..............................  75 / 10.1+
    Elevators, electric control ............  187 / 277+
    Engine starting motor systems ..........  290
        Motor per se .......................  310
    Equipment, design ......................  D13
    Exercise device related ................  482 / 1+
    Eye (see photoelectric)  
    Fan ....................................  310 / 40.5
        Guards .............................  416 / 247 R
        With body motion ...................  310 / 40.5
    Fault isolating safety systems .........  361 / 1+
    Fault location .........................  324 / 512+
    Fault testing ..........................  324 / 500+
    Fence ..................................  256 / 10
        Insulator ..........................  174 / 137 R+
    Filter (see filter, electric)  
    Fire starting device ...................  D07 / 416+
    Flashlight .............................  362 / 208
    Fluid heater ...........................  392 / 311+
    Fluid motor system incorporating .......  60 / 911*
    Electrical system ......................  60 / 911*
    Furnace ................................  373
    Fuses ..................................  337 / 142+
        For explosives .....................  102
        In arc lamp ........................  314 / 10+
        In lamp or electronic tube .........  315 / 74+
    Gas & liquid contact apparatus .........  261 / DIG 80
    Geiger muller counter ..................  250 / 374+
    Geiger muller counter ..................  313 / 93
    Generation .............................  310
        In lamp or electronic tube .........  315 / 55
        System .............................  322
    Generator (see generators) ............  310
        Bicycle driven with lamp ...........  362 / 193
        Nonelectric prime mover driven .....  290
        System .............................  322
    Generator control ......................  322 / 44+
        Polarity control ...................  322 / 5+
        Power transmitting .................  322 / 40
        Mechanism control ..................  322 / 40+
    Generator systems ......................  322
        Automatic control ..................  322 / 11
        Automatic control ..................  322 / 17+
        Excitation control .................  322 / 59+
        Piezoelectric ......................  322 / 2 R
    Gyroscopic compass .....................  33 / 324+
    Heating ................................  219
        Distillation processes  
            Paratory .......................  203
            Thermolytic ....................  201 / 19
        Electrothermic metallurgy ..........  75 / 10.1+
        Gas generator retort ...............  48 / 103
        Incubator type heater ..............  236 / 3
        Knife ..............................  30 / 140
        Metal treatment ....................  148 / 566+
        Metal working with .................  29 / DIG 13
        Static mold ........................  249 / 78
        Thawing pipes and freeze ...........  138 / 33
        Protection .........................  138 / 33
        Track sanders ......................  291 / 20
    High frequency medical .................  607 / 154+
    Igniter with burner (see igniter) .....  431 / 258+
    Ignition, internal combustion ..........  123 / 143 R+
    Engine .................................  123 / 143 R+
    Impulse generator  
        Condenser discharge ................  320 / 166
        Dynamoelectric .....................  310 / 10+
        Electromagnetic periodic switch ....  335 / 87+
        Gas tube relaxation generator ......  331 / 129
        Miscellaneous electronic device ....  327 / 291+
        System .............................  327 / 291+
        Nondynamoelectric ..................  310 / 300
        Periodic switch ....................  200 / 19.01+
        Radar system .......................  342 / 175+
        Relaxation oscillation generator ...  331 / 143
        Signal transmitters ................  341 / 173+
        Supplied to lamp or electronic .....  315 / 289
        Tube ...............................  315 / 289
        Telegraph system ...................  178
        Telephone call transmitters ........  379
        Transistor relaxation generator ....  331 / 111
    Inductor devices .......................  336
    Insulation, electrical .................  493 / 949*
    Insulator ..............................  D13 / 129+
    Interrupter (see interrupter)  
    Ionization chamber .....................  313 / 93
        For nuclear fusion reaction ........  376 / 100
        System .............................  250 / 335
    Junction box ...........................  D13 / 152
    Key (see key, electric)  
    Lamp (see lamps, electric) ............  313
        Consumable electrode arc lamp ......  314
        Display systems, matrix ............  345 / 73
        Display systems, monogram ..........  345 / 44+
        Flash lights .......................  362 / 208+
        Heaters using ......................  219 / 552+
        Lamp systems .......................  315
        Making .............................  445
        Making glassworking machine ........  65 / 152+
        Making glassworking processes ......  65 / 36+
        Making miscellaneous ...............  445
        Repair apparatus ...................  445 / 61
        Repair methods .....................  445 / 2
        Signs, multiple function ...........  40 / 553+
    Lead frame stock .......................  428 / 572
    Leyden .................................  361 / 301.1+
    Line (see line, electric)  
    Liquid purifier insulating or ..........  210 / 243
    Discharging ............................  210 / 243
    Magnetic surgery .......................  600 / 9+
    Magnetically operated switches, ........  335
    Magnets, & electromagnets ..............  335
    Massage ................................  601 / 46+
    Mattress, flexible heater element ......  219 / 549
    Measuring & testing ....................  324
        Instruments, design ................  D10 / 46+
    Medical and surgical treatment .........  607 / 1+
    Medicators .............................  604 / 20+
    Melting furnace ........................  373
        Glass ..............................  373 / 27
    Meter (see meter, electric) ...........  324 / 76.11+
        Coin controlled ....................  194
        Recording ..........................  346
    Miscellaneous ..........................  361
    Miscellaneous electron space ...........  327
    Discharge device systems ...............  327
    Miscellaneous non-linear reactor .......  307 / 401+
    Systems ................................  307 / 401+
    Miscellaneous non-linear solid .........  327
    Solid device circuits ..................  327
    Motive power (see motor, electric) ....  310
        Aircraft control actuator ..........  244 / 175+
        Arc electrode actuator .............  314 / 69+
        Arc electrode actuator .............  314 / 94+
        Automatic miscellaneous ............  318 / 445+
        Generating electric locomotives ....  105 / 35+
        Induction motors ...................  310 / 166+
        Induction motors systems ...........  318 / 727+
        Interchangeably locked gearing .....  74 / 365
        Operator ...........................  74 / 365
        Ironing or smoothing machine .......  38 / 38+
        Lock operating mechanism ...........  70 / 277+
        Locomotives ........................  105 / 49+
        Motor acceleration .................  388 / 842+
        Motor braking ......................  318 / 362+
        Motor making processes .............  29 / 596+
        Motor reversing ....................  318 / 280+
        Motor vehicle ......................  180 / 65.1+
        Piezoelectric ......................  310 / 311+
        Planetary gearing combined .........  475 / 149+
        Plural motor control ...............  318 / 255+
        Plural motors ......................  318 / 34+
        Potentiometer controller ...........  D13 / 125
        Reciprocating motor systems ........  318 / 119+
        Speed control ......................  388 / 800+
        Steering gear operator .............  180 / 443
        Synchronous motor systems ..........  318 / 700+
        Systems ............................  318
        Textile twisting apparatus .........  57 / 100
        Time controlled locks ..............  70 / 271
        Toy machinery ......................  446
        Toys ...............................  446 / 484
            Vehicle ........................  446 / 457
        Vehicle ............................  D13 / 112+
    Motor generators .......................  310 / 113
        System .............................  322
    Motors alternating current .............  310 / 159+
    Music instrument .......................  84 / 600+
    Nail hammers ...........................  227 / 131
    Needle .................................  606 / 44
    Oil well tubing dewaxer ................  392 / 301+
    Organ (see organ, electric) ...........  84 / 600+
    Orthopedics ............................  602 / 4+
    Oscillators ............................  331
    Outlet box support .....................  248 / 906*
    Oven ...................................  219 / 391+
    Packaging for removable components .....  206 / 701+
    Pencil sharpener .......................  144 / 28.1+
    Phase control systems ..................  323 / 212
    Photography,electric ...................  430 / 31+
    Plant culture ..........................  47 / 1.3
    Plasma control .........................  376 / 143
    Plug (see plug, electric)  
    Power conversion systems ...............  363
    Power supply or regulation systems .....  323
        Inrush current limiters ............  323 / 908*
        Lamp dimmer structure ..............  323 / 905*
        Medical electronics ................  323 / 911*
        Optical coupling to ................  323 / 902*
        Semiconductor ......................  323 / 902*
        Precipitators ......................  323 / 903*
        Remote sensing .....................  323 / 909*
        Solar cell systems .................  323 / 906*
        Starting circuits ..................  323 / 901*
        Temperature compensation of ........  323 / 907*
        Semiconductor ......................  323 / 907*
        Touch systems ......................  323 / 904*
        Two of three phases regulated ......  323 / 910*
    Precipitator ...........................  96 / 15+
        Distillation processes & ...........  201 / 19
        Distillation processes & ...........  201 / 40
        Processes ..........................  95 / 57+
    Preserving, disinfecting, ..............  422 / 22+
    Sterilizing methods ....................  422 / 22+
        Food or beverage ...................  426 / 237
            Apparatus ......................  99 / 451
        Fumigator with electric fan ........  422 / 124
    Prime-mover dynamo plants ..............  290
    Printed circuits .......................  361 / 715+
    Printed circuits .......................  361 / 761
    Printed circuits .......................  361 / 748
    Prod ...................................  231 / 7
    Production .............................  D13
    Protection (see protection,  
    Electric)  
    Public utility meter ...................  D10 / 100
    Radio tube (see electric space  
    Discharge devices)  
    Radioactive surgery ....................  600 / 1+
    Rail bonds .............................  238 / 14.1+
    Recorder ...............................  346
        Electrochemical ....................  347 / 163+
        Lock indicator .....................  70 / 434
        Photographic oscillograph ..........  346 / 107.3+
        Spark perforating ..................  347 / 161
    Rectifier  
        Electrolytic .......................  361 / 436+
        Electronic tube type structure .....  313
        Supplying electronic tube or .......  315 / 200 R
        Lamp ...............................  315 / 200 R+
        Supplying radio ....................  327 / 531+
        Systems ............................  363 / 13+
    Relay (see relay, electric)  
    Resistor devices (see resistance) .....  338
    Rivet heaters ..........................  219 / 157
    Safety devices (see safety devices)  
    Score boards ...........................  235 / 1 B
        Timing type ........................  340 / 309.16
    Shock apparatus (see shocker)  
        Cattle goad ........................  231 / 7
        Electric chair .....................  128 / 898+
        Fences .............................  256 / 10
        Hazard prevention systems ..........  307 / 326+
        Patient protection from shock ......  128 / 908*
        Practical joke or initation ........  472 / 56
        Ceremony ...........................  472 / 56
        Preventing shock ...................  174 / 5 R
        Preventing shock ...................  361 / 212+
        Surgical ...........................  607 / 1+
        Therapeutic application ............  607 / 115+
        Trawl net fish control .............  43 / 9.6
    Signaling, electric (see signal) ......  340
        Noise suppression in signal ........  128 / 901*
        Radio ..............................  455
        Railway ............................  246
        Telegraph ..........................  178
        Telephone ..........................  379
        Television transmission ............  348 / 469+
        Vehicle mounted ....................  340 / 425.5+
    Socket (see socket, electric)  
    Soldering ..............................  219 / 129
        Iron ...............................  219 / 245+
        Iron design ........................  D08 / 30
        With pressure ......................  219 / 85.1
    Space discharge device (see radio;  
    Space discharge device;  
    Television)  
    Spark perforating ......................  219 / 384
        Recorder ...........................  347 / 161
    Steering motor system ..................  318
    Sterilizing and pasteurizing  
        Apparatus ..........................  99 / 451
        Methods ............................  426 / 237+
    Stove ..................................  219 / 392+
    Super conductor metal ..................  75
        Composite ..........................  428 / 930*
    Surgical instruments ...................  606 / 32+
    Surgical receptors .....................  604 / 20+
    Switches (see switch, electric) .......  200
        Magnetically operated ..............  335
        Mechanically actuated, general .....  200
        Pencil sharpener ...................  144 / 28.5
        Pencil actuated ....................  144 / 28.5
        Thermally actuated .................  337
    Synthetic resin or natural rubber ......  521 / 915*
    Formation ..............................  521 / 915*
    Teaching ...............................  434 / 301
    Terminals (see terminals, electric)  
    Tester .................................  324
    Testing devices (see testing) .........  324
        Nonelectric test ...................  73
            Engine .........................  73 / 35.01
            Sensor .........................  73 / 35.07
        Radiant energy using ...............  250
        X ray using ........................  378
    Time internal measurements .............  368 / 114+
        Electrical .........................  324 / 160+
    Toothbrush .............................  D04 / 101
    Toys ...................................  446 / 484+
        Telephones .........................  446 / 142
    Train dispatching systems ..............  246 / 2 R+
    Transformation .........................  D13
    Transformers ...........................  336
    Transmission or interconnection ........  307
    Systems (see transmission) ............  307
    Transmission to vehicles or ............  191
    Moving object ..........................  191
        Elevator ...........................  187 / 413
        Moving arc lamp ....................  314 / 129
    Tube (see tube, electric)  
    Tuners .................................  334
    Valve (see electric space  
    Discharge devices)  
        Valve actuation ....................  261 / DIG 74
    Vehicle  
        Locomotive .........................  105 / 49+
        Locomotive generating electric .....  105 / 35+
        Motor vehicle ......................  180 / 65.1+
    Vibrator  
        Electric switch ....................  335 / 87+
        Massage ............................  601 / 46+
        Rectifying system ..................  363 / 110+
    Voltage magnitude control systems ......  323
        Current regulation .................  323
        Electronic tube with ...............  323 / 291
        Impedance systems ..................  323 / 293
        Saturable reactor ..................  323 / 249
        Tap changing .......................  323 / 255
        Transformer systems ................  323 / 247
        Wheatstone bridge ..................  323 / 293
    Wall plug, outlet ......................  439
        Design .............................  D13 / 138.1+
    Watches ................................  D10 / 30+
    Wave analysis ..........................  324 / 76.12+
    Wave guide .............................  333 / 239+
        In cathode ray tube ................  315 / 3+
        In electronic tube .................  315 / 39+
    Wave resonator .........................  333 / 219+
        In cathode ray tube ................  315 / 4+
        In electronic tube .................  315 / 39.51+
    Wave transmission lines & networks .....  333
    Weighing scales ........................  177 / 210 R+
    Welding apparatus ......................  D15 / 144
    Whistles ...............................  340 / 404.1+
    Wire (see wire, electric)  
    Wire nuts ..............................  174 / 87
    Wireless power transmission to a .......  455 / 522
    Radio receiver .........................  455 / 522
        Motors having ......................  318 / 16
        Radio receiver .....................  455 / 343.1+
        Vehicles having ....................  191 / 10
    Wiring systems .........................  307
Electric Control Systems  
    Alarm signal ...........................  340 / 500+
    Annunciators ...........................  340 / 815.4+
    Antihunting  
        Generator systems ..................  322 / 19
        Motor systems ......................  318 / 448
        Motor systems synchronous ..........  318 / 702
    Battery condition responsive ...........  320
    Coded record sensors ...................  235 / 433+
    Computer controlled, monitored .........  700 / 286+
    Current responsive  
        Battery charging systems ...........  320
        Electronic tube voltage ............  323 / 291
        Magnitude control systems ..........  323 / 291+
        Generator systems ..................  322 / 23+
        Generator systems ..................  322 / 27
        Impedance voltage magnitude ........  323 / 293
        Control systems ....................  323 / 293
        Motor systems ......................  318 / 474+
        Motor systems ......................  318 / 478
        Motor systems acceleration .........  388 / 847
        Motor systems braking ..............  318 / 367
        Motor systems speed control ........  388 / 823
        Motor systems synchronous ..........  318 / 714
            Field winding circuits .........  318 / 717
        Motor systems ward leonard .........  318 / 144
        Voltage magnitude control ..........  323
        Systems ............................  323
    Direction responsive ...................  340
        Motor systems ......................  318 / 489
    Display systems ........................  345+
    Electric sign, matrix ..................  345 / 55
    Electric sign, monogram ................  345 / 33+
    Error detector/corrector ...............  714
    Fluid level responsive  
        Alarm signal .......................  340 / 618+
        Motor systems ......................  318 / 481
    Fluid pressure responsive  
        Alarm signal .......................  340 / 626+
        Battery charging systems ...........  320
        Generator systems ..................  322 / 35
        Motor systems ......................  388 / 929*
        Motor systems ......................  318 / 481
    Moisture responsive  
        Motor systems ......................  318 / 483
    Motion picture change over .............  352 / 135
    Multiplexing ...........................  370
    Musical instrument .....................  84
    Ordance control data ...................  235 / 400+
    Position or movement responsive  
        Motor systems ......................  318 / 265+
        Motor systems ......................  318 / 466+
        Motor systems braking ..............  318 / 369
        Motor systems follow up ............  318 / 560+
        Motor systems reciprocating ........  318 / 127
        Motor systems reversing ............  318 / 282
        Motor systems reversing ............  318 / 286
        Motor systems synchronous ..........  318 / 715
            Armature winding circuits ......  318 / 721
            Field winding circuits .........  318 / 719
    Positional servo systems ...............  318 / 560+
        Robot ..............................  318 / 568.11+
    Power factor or phase responsive  
        Generator systems ..................  322 / 20+
        Motor systems ......................  318 / 437+
        Motor systems ......................  318 / 438+
        Motor systems induction ............  318 / 729
        Motor systems synchronous ..........  318 / 700+
        Motor systems synchronous ..........  318 / 700+
        Phase control systems ..............  323 / 205
    Power or load responsive  
        Battery charging systems ...........  320+
        Generator systems ..................  322 / 24+
        Motor systems ......................  318 / 474+
        Motor systems acceleration .........  388 / 844+
        Motor systems braking ..............  318 / 366
        Motor systems constant load ........  318 / 432+
        Motor systems during starting ......  318 / 430+
        Motor systems load limitation ......  318 / 434
        Motor systems plural motors ........  318 / 98+
        Motor systems speed control ........  388 / 930+
        Motor systems synchronous ..........  318 / 700+
        Motor systems ward leonard .........  318 / 141+
    Public address .........................  381 / 82+
    Radiant energy responsive  
        Electronic voltage magnitude .......  323
        Control systems ....................  323
        For nuclear reactor ................  376 / 215
        Generator systems ..................  322 / 26
        Heat responsive test ...............  374 / 32
        Motor systems ......................  318 / 480
        Photoelectric circuits .............  250 / 200+
        Special ray circuits ...............  250 / 336.1
    Rate of change responsive  
        Electronic tube voltage ............  323
        Magnitude control systems ..........  323
        Generator systems ..................  322 / 19+
        Motor systems ......................  318 / 456+
    Robot ..................................  700 / 245+
    Signal .................................  340
        Alarm ..............................  340 / 500+
        Thermal control ....................  340 / 584+
        Vehicle mounted ....................  340 / 425.5+
    Sound or mechanical vibration ..........  318 / 128+
    Responsive motor systems ...............  318 / 128
    Speed responsive  
        Battery charging systems ...........  320
        Generator systems ..................  322 / 29+
        Motor systems ......................  318 / 461+
        Motor systems braking ..............  318 / 369
        Motor systems dynamic braking ......  318 / 379
        Motor systems induction primary ....  318 / 799+
        Circuit ............................  318 / 799+
        Motor systems plural motors ........  318 / 59+
        Motor systems plural motors ........  318 / 66+
        Motor systems speed control ........  318 / 257+
        Motor systems speed control ........  318 / 268+
        Motor systems speed control ........  388 / 800+
        Motor systems synchronous ..........  318 / 715
            Armature winding circuits ......  318 / 721
            Field winding circuits .........  318 / 719
        Motor systems ward leonard .........  318 / 146
        Motor systems ward leonard .........  318 / 147
    Synchronization ........................  375 / 356+
    Telegraph systems ......................  178
    Telephone ..............................  379
    Television .............................  348 / 61+
    Thermally responsive  
        Alarm ..............................  340 / 584+
        Battery charging systems ...........  320 / 150+
        Electric heater systems ............  219 / 482+
        Generator systems ..................  322 / 33+
        Impedance voltage magnitude ........  323 / 294
        Control systems ....................  323 / 294
        Motor systems ......................  318 / 471+
        Motor systems acceleration .........  388 / 934*
        Motor systems speed control ........  388 / 934*
        Signal system ......................  340 / 584+
    Time or time delay responsive  
        Battery charging systems ...........  320+
        Generator systems ..................  322 / 18
        Motor systems ......................  318 / 364
        Motor systems ......................  318 / 447
        Motor systems ......................  318 / 452+
        Motor systems ......................  318 / 484+
        Motor systems acceleration .........  388 / 858
        Motor systems braking ..............  388 / 921+
        Motor systems induction ............  318 / 727+
            Starting .......................  318 / 778+
        Motor systems reversing ............  318 / 283+
        Motor systems synchronous ..........  318 / 700+
        Motor systems ward leonard .........  318 / 141+
    Voltage responsive  
        Battery charging systems ...........  320
        Generator systems ..................  322 / 24+
        Generator systems ..................  322 / 28
        Motor systems ......................  318 / 479
        Motor systems acceleration .........  388 / 847
        Motor systems braking ..............  318 / 368
        Motor systems induction, ...........  318 / 805
        Primary circuit ....................  318 / 805
        Motor systems speed control ........  388 / 822
        Motor systems synchronous ..........  318 / 712+
            Armature winding circuits ......  318 / 720
            Field winding induced voltage ..  318 / 718
        Motor systems terminal voltage .....  318 / 459
        Motor systems ward leonard .........  318 / 145
        Phase control systems ..............  323 / 212
            Voltage magnitude control ......  323 / 234
    Well bore ..............................  340 / 853.3+
Electric Toothbrush ........................  D04 / 101
Electricians Tools .........................  D08
Electrifying Fluid .........................  361 / 225+
Electrocardiograph .........................  600 / 510
Electrochemistry ...........................  205
    Electrodes for apparatus ...............  205
    Machining ..............................  204 / 224 R+
    Processes or apparatus .................  205
Electrocoating .............................  205 / 80+
    By cathode sputtering ..................  204 / 192.1+
    By electrophoreses or electro ..........  204 / 471+
    Osmosis ................................  204 / 471+
Electroculture .............................  47 / 1.3
Electrocution  
    Animal slaughtering ....................  452 / 58+
    Chair ..................................  128 / 898+
    Trap ...................................  43 / 98+
        Insect .............................  43 / 112
Electrode  
    Anode making ...........................  445 / 46+
        With assembly ......................  445 / 35+
    Arc furnace ............................  373 / 88+
    Arc lamp ...............................  314
        Composition ........................  252 / 500+
        Structure ..........................  313 / 357
    Battery, electro chemical ..............  429 / 209+
    Battery,thermo or photoelectric ........  136
    Brush and holder .......................  310 / 239+
    Brushes ................................  310 / 248+
    Carbon  
        Composition for ....................  252 / 502+
        Cored ..............................  313 / 354
        Joint and connection digest ........  403 / DIG 5
        Structure ..........................  313 / 326+
    Carbon saver ...........................  313 / 335
    Cathode making .........................  445 / 46+
        Wire shaping .......................  140 / 71.5+
        With assembly ......................  445 / 35
    Coating ................................  427 / 58+
    Collector rings dynamoelectric .........  310 / 232
    Collector transmission to vehicle ......  191 / 45 R+
    Commutators dynamoelectric .............  310 / 233+
    Condenser ..............................  361 / 271+
    Cooking apparatus ......................  99 / 358
    Electrical apparatus used to ...........  204 / 660+
    Separate or purify liquid ..............  204 / 660+
    Electrical connector for ...............  439
        Chuck or socket ....................  279
        Clasp ..............................  403 / 344
            Carbon electrode ...............  403 / DIG 5
            Interfitted members ............  403 / 345
        Mechanical rod joint ...............  403
    Electrical precipitator ................  96 / 15+
        Processes ..........................  95 / 57+
    Electroanalysis ........................  600 / 345
    Electrolytic chemical apparatus ........  204 / 193+
        Composition ........................  204 / 291+
        Liquid electrode ...................  204 / 219+
        Structure ..........................  204 / 280+
        Supports ...........................  204 / 297.01+
    Electrolytic condenser .................  361 / 500+
    Electrolytic rectifier .................  361 / 436+
    Electronic tube ........................  313 / 326+
    Electronic tube element ................  313 / 326
    Electrophoretic or electro .............  204 / 600+
    Osmotic ................................  204 / 600+
    Electrophotographic charging ...........  399 / 168+
    Electrophotographic development ........  399 / 222+
    Electrothermic processes ...............  75 / 10.1+
        Consumable metal electrode .........  75 / 10.23+
    Filament making see cathode  
    Food treating apparatus ................  99 / 451
    Formed as inductive impedance ..........  315 / 40
    Electronic tube ........................  315 / 40
    Grid making ............................  445 / 35+
        Wireworking ........................  140 / 71.5
    Heating fluid in circuit ...............  392 / 311+
    Holders ................................  219 / 138+
        Arc furnace ........................  373 / 94+
        Arc lamp ...........................  403
        Arc lamp ...........................  314
    Igniter internal combustion ............  123 / 146.5 R
    Engine .................................  123 / 146.5 R
    Igniters ...............................  361 / 247+
        With burner ........................  431 / 264
    Immersible electrode in liquid .........  73 / 304 R
    Level gauge ............................  73 / 304 R
    Ion sensitive ..........................  204 / 416+
    Lamp ...................................  313 / 326+
        Arc composition ....................  252 / 500+
        Arc consumption feed type ..........  314 / 60
        Arc structure ......................  313 / 357
        Filament composition ...............  252 / 500+
        Filament form ......................  313 / 341+
        Gas or vapor .......................  313 / 326+
        Making .............................  445
    Lightning arresters ....................  361 / 117+
    Magnetic chemical apparatus ............  422 / 186.01+
    Making .................................  29 / 592.1
        Battery grid filling ...............  141 / 32+
        Battery grid of metal ..............  29 / 2
        Coating electron emissive ..........  427 / 77+
        Condenser electrode ................  29 / 25.41+
        Extruding plastic coating ..........  425 / 113
        Apparatus ..........................  425 / 113+
        Filament wireworking ...............  140 / 71.5
        Plastic operation filament  
        Plastic operation method ...........  264 / 104+
    Medical diagnostic .....................  600 / 373+
    Mercury cathode arc lamp ...............  313 / 328
    Mercury cathode tubes ..................  313 / 328+
    Mercury vapor lamps ....................  313 / 326+
    Metal for arc lamps ....................  313 / 328
    Metal heating ..........................  219 / 119+
        Arc ................................  219 / 145.1+
        Work holders .......................  219 / 138+
    Microphone .............................  381 / 433+
    Nernst glower ..........................  313 / 326+
        Composition ........................  252 / 500+
    Ozonizers ..............................  422 / 186.07+
    Perforating recording spark ............  347 / 161
    Pressure or vacuum furnace .............  373 / 60+
        Arc furnace with internal ..........  373 / 68
        Atmosphere control .................  373 / 68
        Arc furnace with internal ..........  373 / 77
        Atmosphere control .................  373 / 77
    Radio tube element .....................  313 / 326+
    Selectively permeable membrane .........  204 / 415
    Self baked furnace .....................  373 / 60+
        Self-baking ........................  373 / 89
        Soderberg electrode ................  373 / 97
    Spark plug .............................  123 / 169 EL
    Sterilizer or pasteurizer ..............  426 / 237+
    Storage batteries ......................  429 / 209+
        Making .............................  29 / 623.1+
        Paste mixtures .....................  429 / 149+
    Surgical ...............................  128 / 849
        Guide means ........................  606 / 129
        High frequency therapy .............  607 / 154+
        High frequency therapy .............  600 / 13+
        Instruments ........................  606 / 32+
    Tip cleaner for ........................  314 / 23
    Welding ................................  219 / 145.1+
Electrodeposition ..........................  205+
    Laminating combined ....................  156 / 150+
    Metals .................................  205+
Electrodynamometers ........................  324 / 144+
    Electromagnetic brake ..................  310 / 92+
Electroencephalograph ......................  600
Electroetching .............................  205 / 640+
Electroforming  
    Molds or strip plates ..................  204 / 281
    Processes ..............................  205 / 67+
Electroliers ...............................  362 / 405+
Electroluminescent  
    Stock material .........................  428 / 917*
    Type face design .......................  D18 / 26
Electrolysis ...............................  205
    Hazardous or toxic waste ...............  588 / 301+
    Destruction ............................  588 / 301+
Electrolytes ...............................  205
    Battery ................................  429 / 188+
    Circulation ............................  429 / 51
    Condenser or rectifier .................  252 / 62.2
    Conductivity tester ....................  324 / 438+
    Drain ..................................  429 / 95
    Feeding control ........................  429 / 63
    Fuel cell  
        Solid ..............................  429 / 479+
    Moveable means .........................  429 / 70
    Non movable means ......................  429 / 81
    Two-fluid ..............................  429 / 101
Electrolytic  
    Analogue computer ......................  235 / 61 R
    Apparatus ..............................  204
    Apparatus and method ...................  205
    Bleaching of organic material ..........  205 / 700
        Fibrous ............................  205 / 690
    Circuit controller .....................  361 / 435+
    Cleaning of metal or metal alloy .......  205 / 705+
    Condenser or rectifier .................  361 / 500+
        Electrolyte ........................  252 / 62.2
        Manufacture ........................  29 / 25.01+
    Electrodeposition ......................  205 / 80+
        Alloys .............................  205 / 238+
        Multiple layers ....................  205 / 170+
    Meters .................................  324 / 94
    Processes (and some products) ..........  205
    Recorder ...............................  347 / 163+
    Synthesis ..............................  205 / 334+
    Tank for determining ...................  235 / 61 R
    Equipotential lines ....................  235 / 61 R
Electromagnet See Magnet ...................  335 / 209+
    Armature and ...........................  335 / 220+
    Brake ..................................  310 / 93
    Brake operator and brake ...............  188 / 161+
    Chemical apparatus .....................  422 / 186.01+
        Object protection ..................  422 / 186.02
    Clutch .................................  310 / 92+
    Control for consumable electrode .......  314
    Deflecting arc in lamp .................  313 / 153+
    Electric switch ........................  335 / 2+
    Handling implements ....................  294 / 65.5
    Liquid separation or purification ......  210 / 222+
        Process ............................  210 / 695+
    Making methods .........................  29 / 602.1
    Moving consumable electrode ............  314
    Pickup for musical instrument ..........  84 / 725
    Relay systems ..........................  361 / 160+
    Relay systems switching ................  361 / 160+
    Surgical ...............................  600 / 9+
    Switching systems using ................  361 / 160+
    Systems of supply to ...................  361 / 160+
    Torque device ..........................  310 / 92+
    Tuner operated by ......................  334 / 17+
Electromagnetic Energy  
    Used in reaction to prepare ............  204 / 157.15+
    Inorganic or organic material ..........  204 / 157.15+
    Used in reaction to prepare or .........  522 / 1+
    Treat synthetic resin or ...............  522 / 1+
    Natural rubber .........................  522 / 1+
Electromagnetic Flowmeter  
    Chemical analysis, apparatus ...........  422 / 82.01
Electrometallurgy ..........................  75 / 10.1+
Electrometers ..............................  324 / 76.11+
    Chemical analysis, apparatus ...........  422 / 82.01
    Electrostatic ..........................  324 / 109
    With amplifier .........................  324 / 123 R
Electron (See Electric; Space  
    Discharge device)  
    Apparatus for treating with ............  250 / 492.1
    Beam ...................................  430 / 942*
    Beam tube amplifier systems ............  330 / 44+
    Counter ................................  250 / 472.1
    Electron spin resonance testing ........  436 / 173
    Emissive coating .......................  427 / 77+
    Microscope .............................  250 / 311
    Multipliers  
        Amplifier systems ..................  330 / 42
        Photomultipliers ...................  313 / 523+
        Systems ............................  327 / 573
        Tube structure .....................  313 / 103 R+
    Optics  
        Tube structure .....................  313 / 441+
    Ray tube ...............................  313 / 107.5
        Tube ...............................  D13 / 180
        Twin indicator .....................  313 / 107.5
        With current connections ...........  315 / 382.1
Electronic & Electronics See  
    Electric, radio, television, wave  
    Energy)  
    Auctions ...............................  705 / 37
    Cabinet ventilation ....................  454 / 184
    Compositing system .....................  348 / 578
    Computer controlled, monitored item ....  700 / 286+
    Cooker .................................  99 / 358
    Funds transfer .........................  705 / 39
        Requiring authorization ............  705 / 44
        To pay bills .......................  705 / 40
        Using an atm .......................  705 / 43
        With paper check handling ..........  705 / 44
        With programmed portable memory ....  705 / 41
        Device .............................  705 / 41
        Negotiation, using cryptography ....  705 / 80
        Price label ........................  705 / 20
    Heating  
        Capacitive .........................  219 / 764
        Inductive apparatus ................  219 / 600+
        Microwave ..........................  219 / 678+
    Music instrument .......................  84 / 600+
    Organs .................................  84 / 600+
    Piano tuning ...........................  84 / 454
    Receiving tubes ........................  313
    Switch .................................  327 / 365+
    Voltage regulation .....................  323
Electronic Cash Register (Ecr) .............  705 / 16+
    (See point of sale terminal) ..........  705 / 16+
    Calculating tax ........................  705 / 19
    Coupon redemption, electronic ..........  705 / 14.38
        During e-commerce ..................  705 / 14.23
    For food  
        Portable ...........................  705 / 15
        Self-ordering by customer ..........  705 / 15
        Tabulating orders of individual ....  705 / 18
        Items ..............................  705 / 18
        With video screen for order ........  705 / 15
        Confirmation .......................  705 / 15
    Multiple, interconnected, and/or .......  705 / 21
    Controlled by host .....................  705 / 21
    Purchase with debit or credit card .....  705 / 17
    With inventory monitoring ..............  705 / 22
    With monitoring capabilities  
        Amount of cash in drawer ...........  705 / 18
        Inventory ..........................  705 / 22
        Tabulating of orders of items ......  705 / 18
        Tracking accumulating sales tax ....  705 / 19
Electronic Checkbook .......................  705 / 33
Electronic Commerce (See Commerce)  
Electronic Funds Transfer  
    At point of sale terminal ..............  705 / 17
    Theft prevention .......................  705 / 18
    Using a central clearinghouse ..........  705 / 17
    Verification of pin ....................  705 / 72
Electronic Journal Output ..................  705 / 24
Electronic Price Label (Epl) ...............  705 / 20
Electronic Purse ...........................  705 / 41
    Initializing or reloading ..............  705 / 66
    Using cryptography .....................  705 / 65
        Balancing account ..................  705 / 68
        Detecting double spending ..........  705 / 69
        With authentication ................  705 / 67
Electronic Still Camera ....................  358 / 909.1*
    Scanned semiconductor matrix ...........  348 / 294+
Electronic Transactions  
    Using cryptography .....................  705 / 64
        With intelligent token .............  705 / 65
            Balancing account ..............  705 / 68
            Detecting double spending ......  705 / 69
            Initializing or reloading ......  705 / 66
            With authentication ............  705 / 67
Electronic Tube See Electric Space  
    Discharge device  
    Acorn type .............................  313
    Battery type ...........................  313
    Bias supply ............................  327 / 530+
        Gas tube system ....................  315
        Power packs ........................  307 / 150
        Rectifier system ...................  363 / 117+
        Voltage divider ....................  307 / 15
        Voltage regulation .................  363 / 117+
        With voltage regulation ............  363 / 111+
    Interelectrode capacitance .............  324 / 409+
    Testing ................................  324 / 409+
    Metal type .............................  313 / 248
        Metal envelope as electrode ........  313 / 246+
    Miniature ..............................  313
    Mixer ..................................  313 / 300
    Pencil type ............................  313
    Ruggedized .............................  313
    Subminiature type ......................  313
Electronic Watermark  
    To prevent copying of business .........  705 / 58
    Data distribution ......................  705 / 58
Electrooptical  
    Batteries ..............................  136 / 243+
    Cathode ray tube system ................  315 / 1+
    Cathode ray tubes ......................  313 / 441+
    Diagnostic lamps .......................  600 / 249
    Illuminated signs ......................  40 / 541+
    Lamps ..................................  313
    Light sensitive circuits ...............  250 / 206+
        Electric lamp control ..............  315 / 149+
    Musical instrument .....................  84 / 639+
    Photocell  
        Battery type .......................  136 / 243+
        Electronic tube type ...............  313 / 523+
            Phosphor screen ................  313 / 525+
        Resistance type ....................  338 / 15+
        System discharge device control ....  315 / 149+
        Systems ............................  250 / 200+
    Photographic telegraph recorder ........  178 / 15
        Code recorder receiver .............  178 / 90
    Photometers ............................  356 / 218+
    Recorders  
        Electrochemical ....................  347 / 163+
        Photographic .......................  346 / 107.2
        Radiant energy .....................  365 / 106+
    Recording or reproducing sound .........  369 / 100+
    Signalling .............................  398 / 1+
    Sound recording and reproducing ........  369 / 100+
    Surgical and medical ...................  607 / 1+
    Television .............................  348 / 207.99+
    Ultraviolet application ................  250 / 365+
    X ray tubes ............................  378 / 121
Electroosmosis or Electrophoresis  
    Apparatus ..............................  204 / 600+
    Immunoelectrophoresis ..................  436 / 516
    Processes ..............................  204 / 450+
Electrophotography Apparatus ...............  399
    Chemical processes and materials .......  430 / 31+
Electroplating  
    Apparatus ..............................  204 / 194+
    Metal working with .....................  29 / DIG 12
    Processes ..............................  205 / 80+
Electropneumatic Action in Organs  
    Automatic ..............................  84 / 88
    Pipe organs ............................  84 / 338
    Swells .................................  84 / 347
Electropolishing ...........................  205 / 640+
Electroporation ............................  435 / 173.6
Electroprinting ............................  205 / 52+
Electroscopes ..............................  324 / 109
    Radiation measuring type ...............  250 / 390.01+
Electrostatic (See Separator, Solids)  
    Assembly apparatus or process ..........  29 / 900*
    Coating ................................  118 / 620+
        Control ............................  118 / 671
    Gas separator ..........................  96 / 15+
        Processes ..........................  95 / 57+
    Induction generators ...................  310 / 309+
    Measuring and testing ..................  324 / 327
    Printing using .........................  101 / DIG 37
    Spraying ...............................  239 / 690+
Electrosynthesis ...........................  205 / 334+
Electrotherapeutic  
    Apparatus ..............................  607 / 1
Electrothermic Processes, Metallurgy .......  75 / 10.1+
    Consumable metal electrode .............  75 / 10.23
    Electrical induction ...................  75 / 10.14
    Gaseous treating agent .................  75 / 10.39
    Plasma .................................  75 / 10.19
    Solid treating agent ...................  75 / 10.39
    Volatilization of metal ................  75 / 10.29
Electrotype  
    Manufacture of .........................  205 / 69
Elevator See Lifters .......................  187
    Aircraft control .......................  244 / 75.1+
    Amusement ..............................  472 / 131
        Roundabout .........................  472 / 2
    Artificial intelligence see  
    Artificial intelligence  
    Automobile lift or hoist ..............  269 / 58+
    Bucket .................................  198 / 701+
    Butchering .............................  452 / 178
    Caster leg .............................  16 / 32+
    Catch device ...........................  187 / 351+
    Design .................................  D34 / 28+
    Disabled individual ....................  187 / 200+
    Door ...................................  187 / 313+
        Control ............................  187 / 316+
    Drying apparatus .......................  34 / 189+
        Sheet ..............................  34 / 612+
    Electric control .......................  187 / 277+
        Electric motive power ..............  187 / 289+
    Extensible fire escape type ............  182 / 63.1+
        Manual extending means .............  182 / 67.1+
        Motor extending means ..............  182 / 66.2
    Fish ...................................  405 / 82
    Floating dry dock ......................  114 / 48
    Floor hatch ............................  187 / 336+
    Grain storage type .....................  52 / 245+
        With material port .................  52 / 192+
    Guide ..................................  187 / 406+
    Hanging door wheel mounts ..............  16 / 99
    Lighting on steps ......................  362 / 481
    Material handling ......................  414 / 592+
    Mortar mixer combined ..................  366 / 26
    Platform type scaffold .................  182 / 141+
    Power driven conveyor type .............  198
    Railway ................................  104 / 127+
    Refrigerated article ...................  62 / 378
        Process ............................  62 / 63
    Refrigerator ice .......................  62 / 379
    Screw ..................................  198 / 657+
    Self loading vehicle ...................  414 / 486+
    Shaft closure operators ................  49 / 68
    Signal or call unit ....................  D10 / 108
    Skeleton towers metallic ...............  52 / 111+
        With platforms .....................  182 / 141+
    Spiral .................................  198 / 778+
    Store service type .....................  186 / 22+
Ellagic Acid ...............................  549 / 278
Ellipsograph ...............................  33 / 30.1+
    Flexible cord type .....................  33 / 30.5
    Pattern follower type ..................  33 / 30.3
    Pivoted circular pattern type ..........  33 / 30.2
Elongated-Member-Driving Apparatus .........  227
Embalming ..................................  27 / 21.1+
    Compositions ...........................  424 / 75
    Embalming equipment or apparatus .......  D24
        Infusion or evacuation pump ........  D24 / 111
        Table ..............................  D24 / 183
Emblem or Badge See Medal ..................  D11 / 95+
Embossing (See Impressing; Indenting) .....  101 / 3.1+
    Embossing implement ....................  D18 / 15+
    Laminating fabrics with ................  156 / 219+
    Plastics ...............................  264 / 293
    Tobacco plugs ..........................  131 / 111+
    Typewriting machines ...................  400 / 127+
    Woodworking methods ....................  144 / 358
Embrittlement Test .........................  73 / 86
Embroidering  
    Sewing machine .........................  112 / 78+
        Presser device feature .............  112 / 236
Embroidery .................................  112 / 439
    Design .................................  D05
    Hoops ..................................  38 / 102.2
    Machinery ..............................  D15 / 66+
    Packages ...............................  206 / 49
    Processes ..............................  112 / 475.18+
    Trimmer cutter .........................  83 / 910*
Embryotome .................................  606 / 126
Emergency  
    Closure release ........................  49 / 141
    Draft coupling janney type .............  213 / 111+
    Elevator cable .........................  187 / 348
    Exit door securer with lock ............  70 / 92
    Gear for aircraft water landing ........  244 / 107
    Kits, eg flare, first aid, survival ....  206 / 803*
    Packs ..................................  206 / 803*
    Lock release ...........................  70 / 465
    Nuclear reactor ........................  976 / DIG 375+
    Operating means for closure bolt .......  292 / 92+
        Multiple bolt ......................  292 / 21
    Railway car exits ......................  105 / 348+
    Release for clockwork lock .............  70 / 274
    Operating mechanism ....................  70 / 274
    Resilient tires ........................  152 / 152
    Signal stations railway train ..........  246 / 13
    Dispatching ............................  246 / 13
    Uncoupling device for janney type ......  213 / 160
    Coupling ...............................  213 / 160
Emergency Power Sources, Electric  
    Ac dc converter ........................  327 / 531+
    Battery  
        Dry ................................  429 / 163+
        Storage ............................  429 / 149+
    Dynamotor ..............................  310 / 113
    Electric motor .........................  318 / 17
    Generator ..............................  310
    Generator system, portable .............  322 / 1
        With prime mover ...................  290
    Lighting systems .......................  315 / 86
        Flashlights ........................  362 / 208
        Generator motor ....................  363
        Portable ...........................  315 / 33
        Self-powered lamps .................  362 / 157
Emery ......................................  51 / 309
    Wheels .................................  451 / 541+
        Disc ...............................  451 / 548+
Emetine ....................................  546 / 96
Emissivity  
    Compensated radiation thermometer ......  374 / 128
    Measurement ............................  374 / 9
Empennage ..................................  244 / 87+
Emptying See Discharging  
Emulsifying (See Art Use Classes)  
    Bituminous-in-water ....................  516 / 38+
    Oil-in-water ...........................  516 / 53+
    Water-in-oil ...........................  516 / 22+
Emulsion (See Art Use Classes)  
    Biocidal ...............................  514 / 937*
    Bituminous coating .....................  106 / 277
    Bituminous-in-water ....................  516 / 38+
    Breaking  
        Agents for .........................  516 / 135+
        Mineral oil chemical treatment .....  208 / 188
            Combined .......................  208 / 188
        Processes ..........................  516 / 135+
    Cellulose ether or ester ...............  106 / 139.1+
    Fuel ...................................  44 / 301+
    Herbicide containing ...................  504 / 363
    Oil-in-water ...........................  516 / 53+
    Photographic ...........................  430 / 495.1+
    Synthetic resin or natural rubber  
    (See class 523, 524))  
    Water-in-oil ...........................  516 / 22+
Enamel .....................................  501 / 14+
    Opacifiers for .........................  106 / 312
Enameling ..................................  427
    Polymerization of coating ..............  427 / 487+
    Utilizing electrical, ..................  427 / 487+
    Magnetic, wave, or .....................  427 / 487+
    Particulate energy .....................  427 / 487+
    Metal working with .....................  29 / DIG 14
Encapsulation of Material  
    Gaseous core ...........................  521 / 76
    Hazardous or toxic waste ...............  588 / 249+
    Containment ............................  588 / 249+
    Liquid core ............................  264 / 4
        Using emulsion or dispersion .......  264 / 4.1
        Process ............................  264 / 4.1
    Solid core .............................  427 / 213.3
Encoder Communicating Switch-Type ..........  318 / 602
Encryption (See Cryptography)  
    For financial information and ..........  705 / 18
    Personal purchases .....................  705 / 18
End  
    Gate ...................................  160
        Ship dry dock ......................  114 / 47
        Vehicle body .......................  296 / 50+
    Matching woodworking ...................  144 / 91
    Sleeves for electric conductors ........  174 / 93
End Effector ...............................  901 / 30+
Endless Belt Conveyor (See Conveyor,  
    Endless)  
Endodontic Apparatus .......................  433 / 81
    Method or material for testing .........  433 / 224
    Treating, restoring, removing ..........  433 / 224
    Natural teeth ..........................  433 / 224
Endoradiosonde .............................  600 / 302
Endoscope  
    Diagnostic specula .....................  600 / 101+
    Surgical cutter ........................  606 / 45
Endosmosis .................................  210 / 649+
Enema, Receptacle for Syringe ..............  206 / 364
Energy Accumulating Means, Motor ...........  180 / 165
    Vehicle ................................  180 / 165
Engine (See Motor)  
    Air steam ..............................  60 / 39.181+
    Ammonia ................................  60 / 509+
        Externally applied heat with .......  60 / 644.1
    Boring cylinder ........................  408 / 709*
    Carbonic acid ..........................  60 / 509+
    Compound  
        Fluid pressure and turbine .........  60 / 698+
        Internal combustion engine and .....  60 / 597+
            Combustion products ............  60 / 39.01+
            Fluid pressure .................  60 / 597+
            Turbine ........................  60 / 598+
        Motive fluid reheater between ......  60 / 679+
        Motors in series ...................  60 / 715+
        Multiple expansion chambers ........  91 / 152+
        Plural pneumatic ...................  60 / 407+
    Compressed air .........................  91
    Demonstrating and teaching .............  434 / 389
    Dental .................................  433 / 103+
    Design .................................  D15 / 1+
    Ether ..................................  60 / 509+
    Expansible chamber .....................  91
        One shot explosion actuated ........  60 / 632+
    External combustion ....................  60 / 39.6+
    Fire ...................................  169 / 24
    Fire escape ............................  182 / 63.1+
    Gas air ................................  60 / 39.19+
    Gunpowder ..............................  123 / 24 R
    Hand crank starter .....................  74 / 550+
    Heat exchanging ........................  165 / 51+
    Hot air ................................  60 / 508+
        Expansion of medium ................  60 / 516+
        Externally applied heat ............  60 / 643+
        Internal combustion engine .........  123
        Combustion charge forming ..........  123 / 434+
        Cooling ............................  123 / 41.01
        Design .............................  D15 / 1+
        Excess air to assist exhaust .......  60 / 900*
        Exhaust treatment of rotaries ......  60 / 901*
        Lubricators ........................  123 / 196 R
        Nozzle .............................  239 / 584+
        Oil by-pass heat exchange ..........  165 / 283
        Oil by-pass heat exchange ..........  165 / 297
        Pump drive .........................  417 / 364
        Refrigeration utilizing ............  62 / 323.1
        Rotary piston ......................  123 / 200+
        Rotary reactor, separator or .......  60 / 902*
        Treater of exhaust .................  60 / 902*
        Speed regulator ....................  123 / 319+
        Speed responsive throttle ..........  60 / 906*
        Control ............................  60 / 906*
        Temperature measurement ............  374 / 144+
    Locomotive .............................  105 / 26.05+
    Microwave ..............................  60 / 203.1
    Muffler for hobby craft engine .........  181 / 404*
    Plural motors system ...................  60 / 698+
    Power plant ............................  60
    Prime mover dynamo plant ...............  290
    Pulp refining ..........................  241
    Reaction motor .........................  60 / 200.1+
    Signal systems ships ...................  116 / 21
    Solar ..................................  60 / 641.8+
    Starter gearing ........................  74 / 6+
    Steam ..................................  91
        Design .............................  D15 / 2
    Steam traction .........................  180 / 36+
    Strap starter ..........................  74 / 139+
    Testing ................................  73 / 112.01+
    Toy ....................................  446
    Valve gear (see valve, actuation)  
    Washing machine system .................  60 / 908*
Engineering  
    Artificial intelligence ................  706 / 932*
Engineering Hydraulic and Earth ............  405
    Hazardous or toxic waste ...............  588 / 249+
    Containment ............................  588 / 249+
Engraving  
    Equipment design .......................  D18 / 57
    Photographic process ...................  430 / 269+
    Plate cutting ..........................  409 / 79+
    Printing ...............................  101 / 150+
    Stippling ..............................  72 / 76
    Tools ..................................  30 / 164.9
Enhancer ...................................  536 / 24.1
Enlargers Photographic .....................  355 / 18+
Ensilage Compaction ........................  100 / 65+
Enteric Coating of Medicinal Tablets .......  424 / 475+
Entrails Removing ..........................  452 / 106+
Entrenching Earthworking Apparatus .........  105 / 161
Envelope (See Bulb; Casing)  
    Battery plate separator ................  429 / 136+
    Closures ...............................  229 / 76+
    Cutting blank form .....................  83 / 911*
    Feeding or delivering ..................  271 / 2
    Making .................................  493 / 186+
        Sealing and stamping combined ......  156 / 442
        Tear strip opener ..................  493 / 923*
        Window .............................  493 / 919*
        X-art collection ...................  493 / 917*
    Manifolding  
        Leaf combined ......................  462 / 64+
        Strip connected ....................  229 / 69
    Moistening and sealing .................  156 / 441.5+
    Opener .................................  83 / 912*
        Design .............................  D08 / 102+
    Paper ..................................  229 / 68.1+
        Design .............................  D19 / 3+
Environmental Impact or Decreasing .........  422 / 900*
    Pollution ..............................  422 / 900*
    Hazardous or toxic waste ...............  588
    Destruction ............................  588
Enzyme .....................................  435 / 183
    Enzyme or microbe electrode ............  435 / 817*
    Fruit juice treatment ..................  426 / 51
    Medicinal compositions .................  424 / 94.1+
    Separation or purification .............  435 / 814*
        By sorption ........................  435 / 815*
        Ignition, internal combustion ......  435 / 816*
    Tobacco treatment ......................  131 / 308
Epaulet ....................................  2 / 246
    Badge type .............................  40 / 1.5+
Epdm See Synthetic Resin or Natural  
    Rubber  
Ephedrine ..................................  564 / 364
    In drug ................................  514 / 653
Epicycle  
    Land vehicle occupant propelled ........  280 / 207
    Railway  
        Drive wheel ........................  105 / 100
        Wheel ..............................  295 / 3
Epicyclic Gearing ..........................  475
Episcope ...................................  353 / 65
Episcotister  
    Photometer .............................  356 / 217
EPON™    (See Synthetic Resin or ...........  528 / 87+
    Natural rubber) ........................  528 / 87+
Epoxide Resin (See Synthetic Resin or  
    Natural rubber)  
Epoxy Compounds ............................  549 / 512+
Equalized and Equalizing  
    Animal draft ...........................  278 / 3+
        Horses abreast .....................  278 / 5+
    Animal powered sweep ...................  185 / 22
    Bed bottom .............................  5 / 278
    Brake position adjusters ...............  188 / 204 R
    Dumping vehicle hopper door ............  298 / 37
    Closing ................................  298 / 37
    Extension table ........................  108 / 87
    Hot air furnace ........................  126 / 105 R
    Locomotive .............................  105 / 82
    Railway brake series ...................  188 / 46
    Railway motor torque ...................  105 / 135
    Railway truck ..........................  105 / 209
        Bogie ..............................  105 / 194
    Sectional cabinet closure ..............  312 / 110
    Serial valves dependent motion .........  137 / 613+
        Direct response ....................  137 / 512+
        Stop ...............................  137 / 629+
    Trolleys for single rail ...............  105 / 152
    Suspended car ..........................  105 / 152
    Vehicle fender car and truck ...........  293 / 14
    Vehicle running gear frame .............  280 / 104
Equatorial Telescope .......................  359 / 430
Equilin ....................................  552 / 625
Eraser .....................................  15 / 424+
    Abradant type mutilating ...............  451
    Blackboard .............................  15 / 208+
    Blade type .............................  30
    Design .................................  D19 / 53+
    Disintegrable type .....................  15 / 424+
        Brush combined .....................  15 / 105.52
        Cutter e g., pencil ..............  15 / 105.53
        Sharpener combined .................  15 / 105.53
        Mechanical .........................  15 / 3.53
        Ruler combined .....................  15 / 105.51
        Sharpener pencil combined ..........  15 / 105.53
    Mutilating type and burnisher ..........  7 / 124+
    Scraper type mutilating ................  30 / 169+
    Shield .................................  451 / 445
    Typewriter attachment ..................  400 / 695+
Ergolines ..................................  546 / 67+
Ergometer With Feedback ....................  482 / 900*
Ergosterol .................................  552 / 547+
Ergot Alkaloids ............................  546 / 67+
Erosion Preventing .........................  405 / 15+
    Mineral oil conversion combined ........  208 / 47
Error  
    Checking, electrical ...................  714
        Arithmetic operations ..............  708 / 530+
        Communications synchronization .....  714 / 798
            By error rate or count .........  714 / 707
        Data processing systems, general ...  714 / 1+
        Memory devices .....................  714 / 718+
        Of data per se .....................  714
        Of network .........................  714 / 4.1+
        Program, software ..................  714 / 38.1+
    Correcting circuit .....................  714 / 746+
    Correcting storage on typewriter .......  400 / 6
    Detecting ..............................  714
        In digital data processing .........  714 / 48
        Systems ............................  714 / 48
        Positional servo systems ...........  318 / 638
    Prevention means on communication ......  341 / 24+
    Keyboards ..............................  341 / 24+
Erysodine ..................................  546 / 72
Erysonine ..................................  546 / 72
Erysothiopine ..............................  546 / 72
Erysothiovine ..............................  546 / 72
Erysotrine .................................  546 / 72
Erysovine ..................................  546 / 72
Erythraline ................................  546 / 48
Erythramine ................................  546 / 48
Erythratine ................................  546 / 48
Erythritol .................................  568 / 853+
Erythroidine ...............................  546 / 66
Erythromycin ...............................  536 / 7.2+
Escalator ..................................  198 / 321+
    Design .................................  D34 / 30
Escape  
    Acetylene generator automatic ..........  48 / 56
    Safety .................................  48 / 56
    Fire ...................................  182
        Endless conveyor ...................  182 / 42+
        Single strand stile or pole ........  182 / 189+
        Tower or chute .....................  182 / 48+
    Gas holder high pressure safety ........  48 / 175
    Submarine ..............................  114 / 323+
Escapement  
    Clock and watch structure ..............  368 / 124+
    Clock electric driving type ............  368 / 131
    Clock electric driving type ............  968 / 496+
    Electrode feed .........................  314 / 82
    Gong striker ...........................  116 / 161+
    Mechanical clocks ......................  968 / 95+
    Meter electric .........................  324 / 139
    Motor ..................................  74 / 1.5
    Motor composite with ...................  185 / 5
    Motor spring with ......................  185 / 38
    Motor weight with ......................  185 / 31
    Music leaf turner ......................  84 / 498+
    Testing in clocks ......................  968 / 760
    Type casting machine ...................  199 / 23
    Typewriter feed mechanism ..............  400 / 319+
    Typewriter line locks ..................  400 / 672+
Escutcheon .................................  D08 / 350+
    Bushings or lining thimbles ............  16 / 2.1+
    Covers or face plates ..................  220 / 241
        Design .............................  D08 / 350+
        Electrical apparatus ...............  174 / 66+
        Fluorescent or phosphorescent ......  250 / 466.1
        Apparatus ..........................  250 / 466.1
    Design .................................  D08
    Door knob handle or rose plate .........  292 / 357
    Fluid handling .........................  137 / 377+
    Key operated lock ......................  70 / 452
    Pipe joint .............................  285 / 46
    Radio plate for ........................  D14 / 257
    Television, plate for ..................  D14 / 239
    Wall outlet with .......................  D13 / 137.1+
Espalier ...................................  D25 / 100
Esr, Electron Spin Resonance ...............  436 / 173
Essential Oil ..............................  512 / 5
    Biocides containing ....................  424
Esters .....................................  260
    Carboxylic acid ........................  560 / 1+
        Hydrophenanthrene ..................  560 / 5+
        Nucleus containing .................  560 / 5+
    Cellulose ..............................  536 / 58+
        Nitrogen containing ................  536 / 30+
    Higher fatty acid ......................  554 / 1+
    Resin acid .............................  530 / 200+
        Free acid ..........................  560 / 5+
    Rosin acids ............................  530 / 215+
    Starch .................................  536 / 107+
        Nitrogen containing ................  536 / 48+
    Sulfate ................................  558 / 20+
    Tall oil acids .........................  530 / 232
    Thiocyanic acid ........................  558 / 10+
Estradiol ..................................  552 / 625
Estradiol, in Drug .........................  514 / 182
Estrenes ...................................  552 / 642+
Estriol ....................................  552 / 617
Estrone ....................................  552 / 625
Estrous Cycle Monitoring ...................  600 / 551
Etching ....................................  216+
    Apparatus ..............................  134
    Bright polishing .......................  216 / 100+
    Composition ............................  252 / 79.1+
    Differential apparatus .................  156 / 345.1+
    Direction indicator combined ...........  33 / 305+
    Electrolytic ...........................  205 / 640+
        Stripping elemental layer from .....  205 / 717+
        Metal or metal alloy ...............  205 / 717+
    Electrolytic coating combined ..........  205 / 210+
    Glass ..................................  216 / 31+
    Glass ..................................  216 / 80+
    Glass ..................................  216 / 97+
    Glass with glass working ...............  65 / 31
    Metal working with .....................  29 / DIG 16
    Photo ..................................  430 / 299+
        Multicolor printing surface ........  430 / 301
    Resist (etching) .......................  216 / 41+
    Semiconductor ..........................  438
    Semiconductor photoetching .............  430 / 313
    Sputter etching ........................  204 / 192.32
Ethanol (See Alcohol) .....................  568 / 840+
    Beverages containing ...................  426 / 592+
    Dehydrating ............................  203 / 19
Ethers .....................................  568
    Cellulose ..............................  536 / 84+
        Nitrogen containing ................  536 / 43+
    Cyclic hetero-o-type ...................  549 / 200+
    Oxy ....................................  568 / 579+
    Phenol .................................  568 / 630+
    Thio ...................................  568 / 38+
    Vinyl ..................................  568 / 687+
Ethers, Crown ..............................  549 / 347+
Ethyl  
    Acetate ................................  560 / 265
    Cellulose not plastic ..................  536 / 100+
    Formate ................................  560 / 265
    Nitrite nitrous ether ..................  558 / 488
Ethylene (See Olefin Hydrocarbon)  
    Ethylene diamine tetraacetic acid ......  562 / 566
    Glycol .................................  568 / 852
    Polymer ................................  526 / 352
    Synthesis ..............................  585 / 500+
        By cracking ........................  585 / 648+
    Urea ...................................  548 / 316.4+
Ethylenic Monomers  
    Solid polymer solely therefrom .........  526 / 72+
Etiocholanic Acids .........................  552 / 610+
Eucalyptol .................................  549 / 397
Eudiometers ................................  73 / 23.2+
Eugenol ....................................  568 / 652
Euphoniums .................................  84 / 402
Eurhodines .................................  544 / 347+
Eutectic, Refrigeration Utilizing ..........  62 / 430+
    Automatic ..............................  62 / 139
    Process ................................  62 / 59
Evacuated Chamber  
    Means to introduce material into .......  414 / 217+
        Means to seal chamber ..............  414 / 292
Evacuating Receptacles .....................  141 / 65
    Air displacement in filling ............  141 / 59
    Receptacles ............................  141 / 59
        Successive receptacles .............  141 / 65
    Apparatus ..............................  141 / 65
    Electric lamp etc manufacture ..........  445 / 38+
        Apparatus ..........................  445 / 73
        Combined operation methods .........  445 / 56+
        Methods ............................  445 / 53+
    Food preserving ........................  426 / 404+
        Storage receptacle .................  99 / 472
    Gas filling combined ...................  141 / 66
    Hermetic closing of filled .............  53 / 403
    Receptacle, method .....................  53 / 403+
    Radiant energy tubes ...................  313 / 553+
        Having heating means ...............  313 / 549
Evaginated Shoe ............................  12 / 142 A
    Sole attaching means ...................  36 / 17 A
Evaluation  
    Job performance of employees ...........  705 / 7.42
Evaporator  
    Boiler .................................  122
    Cabinet combined .......................  312 / 31.1+
    Concentrating ..........................  159
        Spray type .........................  159 / 3
            Gaseous current ................  159 / 4.1+
    Gas and liquid contact apparatus  
        Porous mass ........................  261 / 94+
    Laboratory apparatus ...................  422 / 528+
        Porous sheet .......................  261 / 100+
    Making .................................  29 / 890.07
    Oil combustion engine ..................  123 / 522
    Refrigerator ...........................  62 / 515+
        Automatic ..........................  62 / 216+
        Defrost water by heater ............  62 / 275+
        Defrost water by refrigerator ......  62 / 279
        Heat ...............................  62 / 279
        Making .............................  29 / 890.035
    Sugar manufacture ......................  127 / 16
    Ventilator  
        Building ...........................  454 / 337
        Rail-car, bus or trailer ...........  454 / 110
Evaporometer ...............................  374 / 39
Evener  
    Animal draft vehicle equalizer .........  278 / 13
        Horse detacher .....................  278 / 32
    Grain harvesters, head or butt .........  56 / 468
    Textile loom, dobby ....................  139 / 74
Eviscerating ...............................  452 / 106+
Excavation (See Digger) ...................  37
    By nuclear explosion ...................  976 / DIG 425
    Caisson ................................  405 / 272
        Pressurized ........................  405 / 8+
    Clamshell buckets ......................  37 / 461
    Ditch filler ...........................  37 / 142.5+
    Ditchers ...............................  37 / 347+
    Dredgers ...............................  37 / 307+
    Hazardous or toxic waste ...............  405 / 129.1+
    Containment ............................  405 / 129.1+
    Land clearer ...........................  37 / 301+
    Mine ventilation .......................  454 / 168+
    Mining or quarrying with ...............  299 / 7
    Separating .............................  299 / 7
    Orange-peel buckets ....................  37 / 182+
    Railway graders ........................  37 / 104+
    Railway snow excavators ................  37 / 198+
    Road grader type .......................  37 / 381+
    Roadway snow excavators ................  37 / 196+
    Self-loading vehicles ..................  37 / 304+
    Shoring or bracing .....................  405 / 272+
    Snow excavators & melters ..............  37 / 227+
    Stone remover ..........................  37 / 303
    Stump and removers .....................  37 / 302
    Tunnel excavating ......................  299
    Tunnel ventilation .....................  454 / 166+
Excavator  
    Dipper .................................  414 / 690+
    Force pump .............................  37 / 342+
    Pipe and cable laying combined .........  405 / 154.1+
    Screw ..................................  175 / 394+
    Suction pump ...........................  37 / 317+
Excelsior  
    Making .................................  144 / 185+
    Package filling ........................  493 / 967*
Exchange ...................................  65 / 30.13+
    Heat ...................................  165
        Mortar mixers having ...............  366 / 22+
            Processes ......................  366 / 4
        Temperature regulation .............  236
        Tobacco smoking device .............  131 / 194+
    Telephone ..............................  379
Execution Devices  
    Electric chairs ........................  128 / 898+
    Medicators .............................  604 / 19+
    Poisons ................................  424
    Surgical instruments ...................  606 / 1+
    Trap animal  
        Choking or squeezing ...............  43 / 85+
        Electrocuting ......................  43 / 98+
        Everset ............................  43 / 64+
        Explosive ..........................  43 / 84
        Impaling or smiting ................  43 / 77+
        Self reset .........................  43 / 73+
    Trap insect  
        Adhesive ...........................  43 / 114+
        Electrocuting ......................  43 / 112
Exercising  
    Animal .................................  119 / 702+
    Arm wrestling ..........................  482 / 905*
    Devices ................................  482
        Adjustable .........................  482 / 908*
        Breathing improvement ..............  482 / 13
        Ergometer with feedback ............  482 / 900*
        Field sports .......................  482 / 14+
        Having computer circuitry ..........  482 / 901*
        Having mechanical indicator ........  482 / 909*
        Home furnishing attached ...........  482 / 904*
        Home structure attached ............  482 / 904*
        Isometric ..........................  482 / 91
        Roundabout .........................  472 / 1+
        Stretching .........................  482 / 907*
        Weights ............................  482 / 93+
        Wheelchair attached ................  482 / 904*
    Kinesitherapy ..........................  601 / 23+
    Light thermal and electrical ...........  607 / 77
    Application combined ...................  607 / 77+
    Music ..................................  84 / 465+
    Opponent-supplied resistance ...........  482 / 906*
    Poultry feeding combined ...............  119 / 70
Exfoliation  
    Cereals ................................  426 / 449+
    Compositions ...........................  252 / 378 R
    Decorticating ..........................  19 / 5 R+
    Seed or seed parts .....................  241 / 6+
    Stone ..................................  125 / 23.01+
Exhaust (See Evacuating Receptacles)  
    Mufflers ...............................  181 / 212+
        Design .............................  D12 / 194
    Operated  
        Brakes .............................  188 / 154
    Pipe making ............................  29 / 890.08
        Horns and whistles .................  116 / 138
    Recirculation ..........................  123 / 568.11+
    Silencers ..............................  181 / 212+
        For internal combustion engines ....  60 / 272+
    Steam engine ...........................  60 / 681+
    Treatment  
        Combustion device feed in ..........  60 / 683
        Combustion engine ..................  60 / 272+
            Excess air to internal .........  60 / 900*
            Combustion engine ..............  60 / 900+
            Serially connected motors ......  60 / 679+
        Furnace ............................  432 / 67+
        Furnace, metallurgical .............  266 / 144+
        Furnace, solid fuel ................  110 / 203
        Motors .............................  60 / 685+
        Rotary engines .....................  60 / 901*
Exhauster(See Evacuating Receptacles)  
    Filled receptacle cooking ..............  99 / 359
    Apparatus ..............................  99 / 359+
    Heating etc gas making apparatus .......  48 / 173
    Water closet tank outlet siphon ........  4 / 368+
Exhibiting  
    Cards pictures and signs ...............  40
        Design .............................  D20 / 10+
        Design display card ................  D20 / 40
    Check controlled .......................  194
    Dispensing combined ....................  222 / 23+
    Gem setting feature ....................  63 / 30
    Indicator combined .....................  116 / 307
Exhibitor  
    Cabinet with ...........................  312 / 234
Exit  
    Bee hive ...............................  449 / 20+
    Door lock ..............................  70 / 92
    Fire escape chute ......................  182 / 48+
    Insect .................................  160 / 12+
    Railway car  
        Control ............................  105 / 341+
        Emergency ..........................  105 / 348+
    Stratifier discharge ...................  209 / 494+
Expanded Metal .............................  52 / 670+
    Making .................................  29 / 6.1
Expander and Expanding  
    Anchor .................................  411 / 15+
        Expanding or piercing earth ........  52 / 155+
    Boiler formers .........................  72 / 393
    Boring head cutter .....................  408 / 199+
    Building component .....................  52 / 67
    Cereals ................................  426 / 449+
        Apparatus ..........................  99 / 323.4+
    Collapsible taps .......................  408 / 147+
    Exfoliated composition .................  252 / 378 R
    Face plate railway car .................  105 / 10+
    Felly ..................................  157 / 9+
    Gas liquefying and separating ..........  62 / 621+
        Processes ..........................  62 / 621+
    Gate valve faces .......................  251 / 193+
    Hoof and shoe ..........................  168 / 47
    Joints (see device incorporating)  
    Liquefied gas fuel as refrigerant ......  62 / 7
    Mandrels ...............................  269 / 48.1
        Chuck ..............................  279 / 2.01+
        Lathe work mount ...................  82 / 169
        Winding reeling device .............  242 / 571+
        Or unwinding .......................  242 / 407.1
    Metal making ...........................  29 / 6.1
        Article ............................  428 / 596+
    Orthodontic ............................  433 / 7
    Pipe expanders .........................  72 / 393
        Methods of joint expanding .........  29 / 890.044
    Piston ring ............................  277 / 467+
    Piston ring applier ....................  29 / 222+
    Reamer .................................  408 / 227+
        Earth boring type ..................  175 / 263+
    Refrigeration by .......................  62
    Sheet metal shaping die ................  72 / 393
    Tube cutter ............................  30 / 103+
    Wheel felly ............................  157 / 9
Expansible Cabinets ........................  312 / 205
Expansible Chamber Devices .................  92
Expansion (See Expander)  
    Engine, refrigeration producer .........  62 / 402+
        Automatic ..........................  62 / 172
        Liquefied gas producing ............  62 / 621+
        Process ............................  62 / 86
    Joints  
        Between articulated members ........  403 / 52+
        Bridge .............................  14 / 73.1
        Building ...........................  52 / 396.01+
        Distillation apparatus .............  202 / 268
        Flexible diaphragm or bellows ......  403 / 50+
        Fluid distributor nozzle ...........  239 / 397.5
        Heat exchanger .....................  165 / 81+
        Pipe ...............................  285 / 298+
        Resilient building .................  52 / 313
        Static mold forming ................  249 / 9
    Plug  
        Metallic receptacle ................  220 / 233+
        Pipe ...............................  138 / 89+
    Reeds warp preparing ...................  28 / 213
    Valve, refrigeration utilizing .........  62 / 527+
        Automatic ..........................  62 / 222+
Expenses  
    Accounting, computer controlled ........  705 / 30
        Tax preparation ....................  705 / 31
        Time-based billing .................  705 / 32
Expert System Shell ........................  706 / 60
Expert System Tool .........................  706 / 60
Exploring  
    Borehole and drilling study ............  73 / 152.43+
    Depth sounding .........................  73 / 290 R+
        Electro-acoustic ...................  367 / 99+
        Sound ..............................  181
    Diagnostics medical ....................  600 / 300+
    Earth boring ...........................  175 / 50
    Electrical .............................  324
    Electrical ore testing .................  324 / 376
    Meteorology ............................  73 / 170.16+
    Radar ..................................  342 / 191+
    Radiosonde .............................  340 / 870.01+
        System .............................  340 / 870.1+
    Sound ..................................  181
Explosion Control  
    Acetylene generator ....................  48 / 56
    Blast or cupola furnace ................  266 / 174
    Blowout plugs,frangible or fusible .....  220 / 89.1
    Containers of inflammable ..............  220 / 88.1+
    Substances .............................  220 / 88.1+
    Davy lamp or wire gauze protected  
    Dry cleaning and laundry apparatus .....  68 / 209
    Drying apparatus .......................  34 / 558+
    Gas cooking stoves .....................  126 / 42
    Gas distribution .......................  48 / 192
    Gas holder high pressure safety ........  48 / 175
    Escape .................................  48 / 175
    Internal combustion engines ............  123 / 24 R
    Milling or grinding apparatus ..........  241 / 31
    Mine safety systems ....................  299 / 12
    Safes and bank protection combined .....  109 / 26+
    Turbines ...............................  60 / 793+
    Water back .............................  126 / 35
    Water elevators ........................  417 / 73+
Explosive (See Ammunition; Bomb; ...........  102
    Engine; gun) ...........................  102
    Anchors ................................  114 / 295
    Article molding or shaping .............  264 / 3.1
        Extruding ..........................  264 / 3.3
        Forming or treating particulate ....  264 / 3.4+
        Material ...........................  264 / 3.4+
        Rolling to form sheet or rod .......  264 / 3.2
    Bag to contain explosive powder ........  102 / 282
    Cap mechanical gun combined ............  124 / 2
    Carbon preparation process .............  423
    Charge making ..........................  86
    Comminution or puffing  
        Apparatus ..........................  241 / 301
        Cereals apparatus ..................  99 / 323.4+
        Cereals processes and products .....  426 / 625+
        Processes ..........................  241 / 1
        Vegetable processes ................  426 / 445
    Compositions ...........................  149
    Devices ................................  102
        Narcotic containing ................  102 / 512
        Safes & bank protection combined ...  109 / 36+
    Earth boring ...........................  175 / 2+
    Fuses primers and igniting devices .....  102 / 200+
    Impact driven fastener, eg nail ........  411 / 440+
    Making apparatus .......................  422 / 163
    Material incinerator ...................  110 / 237
    Material treating ......................  264
    Metal deforming x-art ..................  72 / 706*
    Metal forming ..........................  72 / 56
    Mining .................................  299 / 13
    Operated assembling apparatus ..........  29 / 254+
    Operated one shot motor ................  60 / 632+
    Operator  
        Assembling device ..................  29 / 254
        Metal deforming device .............  72 / 430
        Well tube perforator ...............  175 / 2+
    Power plant x-art ......................  60 / 914*
    Testing ................................  73 / 35.14
    Thermic compositions or charges ........  149
    Well  
        Apparatus ..........................  166 / 63
        Processes using ....................  166 / 299
        Torpedoes ..........................  102 / 301+
        Tubing perforator ..................  175 / 2+
Exposure  
    Camera  
        Automatic control system ...........  396 / 213+
    Electrophotographic copier .............  399 / 177+
    Meter ..................................  356 / 213+
Expressing  
    Butter and cheese cutter combined ......  425 / 308+
    Butter worker combined .................  425 / 200+
    Die  
        Block and earthenware ..............  425 / 308+
        Block and earthenware ..............  425 / 325+
        Metal including powdered ...........  72 / 253.1+
        Mold core making ...................  164 / 174
        Particulate metal ..................  419 / 67
        Pastry and confections .............  99
        Pastry and confections .............  425
        Plastic molding ....................  425 / 381.2
        Soap molding .......................  425 / 308+
        Soap molding .......................  425 / 325+
    Drying combined ........................  34 / 70
    Presses ................................  100 / 104+
        With heater ........................  100 / 92+
Expression Mechanism Musical  
    Applying expression lines to ...........  84 / 463
    Record .................................  84 / 463
    Automatic pneumatic expression .........  84 / 33+
    Mechanism for automatic pianos .........  84 / 33+
    Automatic stringed instrument ..........  84 / 33
    Pneumatic action .......................  84 / 33+
    Electric organs ........................  84 / 626
    Electric organs ........................  84 / 662
    Electric organs ........................  84 / 701
    Electric organs ........................  84 / 734
    Piano ..................................  84 / 216+
    Tracker bar modified for ...............  84 / 157
    Expression .............................  84 / 157
Extension  
    Cords ..................................  439 / 502+
    Tables, co planar surfaces .............  108 / 65+
Extensometer  
    Dilatometer ............................  374 / 55
    Distance measuring .....................  33 / 784+
    Dynamometer ............................  73 / 862.391+
    Electrical .............................  324
    Gauges .................................  33 / 501+
    Optical ................................  356 / 625+
    Strain resistance ......................  338 / 2
    Stress strain test .....................  73 / 760+
Extinguisher  
    Boiler safety ..........................  122 / 504.3
    Burner cap or cover ....................  431 / 144+
    Cigar and cigarette ....................  131 / 256
    Electric arc prevention ................  218 / 1+
    Electric contact arc prevention ........  361 / 2
    Extinguishing composition ..............  252 / 2+
    Fire ...................................  169
        Design .............................  D29 / 125+
    Fluid type for burner ..................  431 / 145
    Furnace fire ...........................  169 / 54+
        Ash pan ............................  110 / 171
    Inflammable fluid containers ...........  169 / 66+
    Signalling system electric .............  340 / 289
    Tobacco ash receiver combined ..........  131 / 235.1+
    Tobacco product combined ...............  131 / 347
Extracting and Extracts (See Material  
    Recovered)  
    Apparatus ..............................  422 / 261+
        Beverage ...........................  99 / 279+
        Mineral oil ........................  196 / 14.52
        Sugar ..............................  127 / 3+
        Textile treating fluid combined ....  68 / 19+
        With treating ......................  68 / 19+
    Biocidal ...............................  424
    Distillation combined  
        Retort .............................  202 / 107
        Separatory processes ...............  203
        Still ..............................  202 / 170
        Still with .........................  202 / 168+
        Thermolytic processes ..............  201
    Dye compositions .......................  8 / 438
    Dyes natural ...........................  8 / 646
    Food ...................................  426 / 655
        Chocolate ..........................  426 / 631+
        Coffee .............................  426 / 594
        Coffee substitute ..................  426 / 596
        Coffee substitute from fruits ......  426 / 594+
        Or vegetables ......................  426 / 594+
        Condiments and flavors .............  426 / 650
        Hop ................................  426 / 600
        Malt ...............................  426 / 64
        Meat ...............................  426 / 656
        Pectin .............................  426 / 655
        Sea food ...........................  426 / 655
        Tea ................................  426 / 435
    Inorganic materials ....................  423 / 210+
        Actinide series compounds ..........  423 / 249+
        Crystallization combined ...........  23 / 299
        Crystallization selective ..........  23 / 297
        Combined ...........................  23 / 297
    Medicinal animal .......................  424 / 520+
    Mineral oils ...........................  208 / 311+
        Conversion combined ................  208 / 46+
    Ores and metals ........................  75 / 711+
    Organic materials  
        Algins .............................  536 / 3
        Alkaloids cinchona .................  546 / 134+
        Alkaloids opium ....................  546 / 44+
        Alkaloids tobacco ..................  546 / 279.4
        Alkaloids undetermined .............  546 / 1
        Constitution .......................  546 / 1
        Esters carboxylic acid .............  560 / 1+
        Fats fatty oils ester type .........  554 / 8+
        Waxes higher fatty acids ...........  554 / 8+
        Glycosides .........................  536 / 18.5+
        N-glycosides .......................  536 / 2+
        Pectins ............................  536 / 2
        Synthetic resins from plant ........  528 / 1+
        Extract ............................  528 / 1+
        Tannins ............................  560 / 68+
    Sugar ..................................  127 / 43+
    Tanning ................................  8 / 94.32
        Aluminum compound combined .........  8 / 94.3
    Tobacco ................................  131 / 297
Extractor (See Wringers)  
    Bolt or screw ..........................  81 / 436+
    Centrifugal ............................  210 / 360.1+
    Closure remover ........................  81 / 3.07+
        Can opener having ..................  7 / 152+
        Compound tool having ...............  7 / 151+
        Pliers having ......................  7 / 126+
    Disassembling apparatus ................  29 / 700+
    Easy out ...............................  81 / 436+
    Electrolyte treatment ..................  204 / 233+
    Nail ...................................  254 / 18+
        Shoe lasting .......................  12 / 16
    Pen ....................................  29 / 808
    Press ..................................  100 / 104+
    Shell from firearm .....................  42 / 25
        Revolver ...........................  42 / 68
        Tilting breech .....................  42 / 46
    Shell projectile or wad ................  81 / 3.05
    Stump and poles ........................  254 / 199+
    Tooth ..................................  433 / 141+
    Wheel spoke ............................  157 / 12
Extruding (See Expressing Die)  
    Hydrostatic extrusion ..................  72 / 711*
Eye  
    Artificial .............................  623 / 4.1+
    Contact lenses .........................  351 / 160 R+
    Cup ....................................  D24 / 120
    Deformity correction ...................  606 / 204.25
    Doll ...................................  446 / 392
        Movable ............................  446 / 343+
    Dropper ................................  604 / 295+
        Design combined with bottle ........  D09 / 723+
        Design combined with closure .......  D09 / 447
        Dispenser combined .................  222 / 420+
        Syringe ............................  604 / 295+
    Examining & testing instruments ........  351 / 200+
        Design .............................  D10 / 46+
        Objective ..........................  351 / 205+
        Subjective .........................  351 / 222+
        Test charts and targets ............  351 / 239+
    Exercising .............................  601 / 37
        Optometers .........................  351 / 205+
        With testing .......................  351 / 203
    Forming  
        Chain making .......................  59 / 21
        Wireworking ........................  140 / 104
    Hook and eye fastener ..................  24 / 698.1+
        Design apparel .....................  D11 / 208+
        Design,hardware ....................  D08 / 367+
        Relatively movable hook ............  24 / 598.4+
        Portions ...........................  24 / 598.4+
        Sewing machine attaching ...........  112 / 105
    Interlocking wire machine ..............  140 / 114
    Neck yoke ..............................  278 / 125
    Nose grips .............................  351 / 132
        Integral with bridge ...............  351 / 131
        Pince-nez ..........................  351 / 71+
    Photography ............................  396 / 18
        Testing instruments ................  351 / 206
    Pieces for optical instruments .........  359 / 600
    Protecting masks .......................  2 / 10+
        Design .............................  D16 / 301+
    Protectors for animals .................  54 / 80.2
        Design .............................  D30 / 144+
    Shields  
        Electric welder s hood combined ....  219 / 147
    Thill coupling .........................  278 / 77+
    Toy figure .............................  446 / 392
    Treating  
        Douches ............................  604 / 295+
        Electrically .......................  607 / 141
        Exercising .........................  606 / 204.25
        Medicine ...........................  424
    Vision testing & correcting ............  351
Eye Bolt, Making ...........................  29 / 7
Eye Glasses ................................  351 / 41
    Anti-glare or shading ..................  351 / 44
    Bridge .................................  351 / 133
    Cases ..................................  206 / 5+
        Design .............................  D03 / 265
    Cleansing compositions .................  510 / 163+
    Contact lens ...........................  351 / 160 R+
    Contact lens fitting ...................  351 / 247
    Correctors .............................  351 / 140+
    Design .................................  D16 / 300+
    Eye shields attached ...................  2 / 13
    Fitting apparatus ......................  351 / 200+
    Gages for ..............................  33 / 200
    Hinge ..................................  16 / 228
    Holder .................................  248 / 902*
        Design .............................  D03 / 266
        Rigid container ....................  493 / 914*
    Metal frame making .....................  29 / 20
    Ornamentation for ......................  351 / 51+
        Special tool for ...................  81 / 3.5+
    Protective goggles .....................  2 / 426+
    Temple .................................  351 / 121
Eye Goggles ................................  2 / 426+
    Anti-glare or shading ..................  351 / 44
    Design .................................  D16 / 303+
Eye Lens Insertion .........................  606 / 107
Eyebrow Brush ..............................  D04
Eyelash Curler .............................  D28 / 36
Eyelet .....................................  24 / 713+
    Apparel fastener .......................  D11 / 208+
    Closure fastener sealing ...............  292 / 314
    Making by die shaping sheet metal ......  72 / 343+
    Setting ................................  227 / 51+
Eyeleting  
    Machine ................................  227 / 51+
    Paper tag making .......................  493 / 375+
    Sewing machine .........................  112 / 66
Eyeshade See Visor .........................  D29 / 109+

This page is produced by the Office of Classification Support (Office of Patent Classification) for the Reference Tools Project.

Please send questions and comments to usptoinfo@uspto.gov .

Note: The Patent and Trademark Depository Library Program (PTDLP) administers a nationwide network of public, state and academic libraries designated as Patent and Trademark Depository Libraries authorized by 35 U.S.C. 13 to: Disseminate Patent and Trademark Information Support Diverse Intellectual Property Needs of the Public. PTDL Contact Information

Note: For information/comments on electronic information products, such as purchasing USPTO data, or to discuss system requirements for magnetic tape products, contact:

     Information Products Division -- U.S. Patent and Trademark Office Information Products Division Contact Information
     Or, browse their on-line catalog.

KEY: e Biz=online business system fees=fees forms=formshelp=help laws and regs=laws/regulations definition=definition (glossary)

The Inventors Assistance Center is available to help you on patent matters.Send questions about USPTO programs and services to the USPTO Contact Center (UCC). You can suggest USPTO webpages or material you would like featured on this section by E-mail to the webmaster@uspto.gov. While we cannot promise to accommodate all requests, your suggestions will be considered and may lead to other improvements on the website.


|.HOME | SITE INDEX| SEARCH | eBUSINESS | HELP | PRIVACY POLICY