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Oar ........................................  440 / 101+
    Design .................................  D12 / 215
    Lock ...................................  440 / 106+
Oast .......................................  432 / 120+
Oatmeal Making .............................  241
Objectives  
    Photographic ...........................  359 / 642+
    Telescope and microscope ...............  359 / 656+
Oboe .......................................  84 / 380 R+
Observation Boat ...........................  114 / 66
Obstacle Controlled or Operated  
    Tire pump element ......................  152 / 423+
    Vehicle step, pivoted ..................  182 / 91
        Spring biased ......................  182 / 89
Obstetric Appliances  
    Embryotome .............................  606 / 126
    Exercising .............................  601 / 45
    Forceps ................................  606 / 119+
    Instruments ............................  606 / 119+
    Receptor ...............................  604 / 317+
    Tractors ...............................  606 / 119+
Ocarina ....................................  84 / 380 R
Occult Blood ...............................  436 / 66
Occupational Training ......................  434 / 219+
Ocean Thermal Energy Conversion, Otec ......  60 / 641.7
Octane (See Parafin Hydrocarbon)  
    Production by alkylation ...............  585 / 709+
Octave  
    Couplers for pianos ....................  84 / 235
    Couplers for pipe organs ...............  84 / 340+
    Couplers for reed organs ...............  84 / 373
Octode Converter ...........................  313 / 300
Octopus  
    Processing for food ....................  452 / 12+
Odometer ...................................  235 / 95 R+
    Combined with electrical speed .........  324 / 166
    Indicator ..............................  324 / 166
    Computerized ...........................  705 / 417
    Design .................................  D10 / 70
    Speedometer ............................  116 / 62.1
Odorizer ...................................  48 / 195
    Gas & liquid contact apparatus .........  261 / DIG 17
    Odor release material ..................  428 / 905*
Office Equipment  
    Desk type name plate ...................  D20 / 15
    Machines ...............................  D18
        Machine cabinets ...................  D18
    Miscellaneous, design ..................  D19 / 65+
    Photocopy machines .....................  D18 / 36+
Offset  
    Metal bending ..........................  72 / 386+
    Printing ...............................  101 / 130+
Offshore  
    Platform ...............................  405 / 195.1+
        Floating ...........................  114 / 264+
    Well ...................................  166 / 335+
Offtake  
    Distillation ...........................  202 / 254+
    Flue boiler feed heater ................  122 / 421
    Furnace shaft ..........................  266 / 159
    Ventilating hood .......................  454 / 49+
Ohmmeter ...................................  324 / 691+
Oil (See Particular Type)  
    Burners (see notes to) ................  239
        Nozzles (see notes to) ............  239
        Retort .............................  431 / 206+
    Burnishing .............................  29 / 89.5
    Can ....................................  220
        Cutting spouts .....................  222 / 81+
        Design .............................  D23 / 211
        Dispensers .........................  222
        Resilient wall .....................  222 / 206+
    Cutting ................................  508 / 110+
    Distributor  
        Ammunition and explosive device ....  102 / 366
        Buoys ..............................  441 / 34
        Fluid breakwater ...................  405 / 22
        Harbor installations ...............  405 / 22
        Wave or ships hulls ................  114 / 232+
    Edible .................................  426 / 601+
        Preservation .......................  426 / 330.6+
    Emulsions ..............................  516 / 9+
    Essential ..............................  512 / 5
    Filters ................................  210 / 348+
        Fuel entering nozzles or float .....  261 / DIG 40
        Chamber ............................  261 / DIG 40
        In closed circulating system .......  210 / 167.01+
    Fuel ...................................  44
        Burner nozzle (see notes to)  
        Burner solid fuel combined .........  110 / 260+
        Mineral oil only ...................  208 / 15+
    Gages on lamp stands ...................  431 / 13
    Gas making .............................  48 / 61+
    Glyceride ..............................  554 / 1+
    Lamps ..................................  431 / 298+
    Leak collection ........................  405 / 60
    Lubricating ............................  D09 / 682+
        Mineral oil only ...................  208 / 18+
        Refrigerant or energy exchange .....  252 / 68
        Combined ...........................  252 / 68
    Mineral ................................  208
    Oil water skimmers .....................  210 / 242.3
    Paints .................................  106 / 253+
    Spill containment ......................  405 / 60+
    Stone ..................................  451 / 554
    Synthetic resin ctg fatty acid  
    Triglycerides (see synthetic  
    Resin or natural rubber)  
    Testers ................................  73 / 61.71+
    Toilet .................................  4 / DIG 11
    Transformer ............................  252 / 570+
        All-hydrocarbon ....................  585 / 6.3+
    Vulcanized factice .....................  106 / 249
    Water gas ..............................  48 / 84
    Well ...................................  166
        Drilling ...........................  175
        Heaters electric ...................  392 / 301+
        Strainer making ....................  29 / 6.01+
Oil Shale  
    Distillation ...........................  201
    Mineral oil from .......................  208 / 400+
Oiler and Oiling (See Lubrication)  
    Abrading ...............................  451 / 554
    Conduit in drill bit ...................  408 / 57
    Cutter .................................  83 / 169
    Die screw ..............................  408 / 56
    Dispenser ..............................  222
    Flow meter .............................  73 / 280
    Heat exchange control ..................  165 / 200+
    Oil cup closure ........................  184 / 88.1+
    Saw ....................................  83 / 169
    Saw guide ..............................  83 / 169
    Street .................................  239 / 146+
    Textile processing compositions ........  252 / 8.81+
    Textile weaving ........................  139 / 45
    Waste ..................................  384 / 181
    Wrench combined ........................  81 / 2
Ointments ..................................  424
Oldham Coupling ............................  464 / 102+
Oleandomycin ...............................  536 / 7.2+
Olefins ....................................  585 / 16+
    Alcohols by hydration of ...............  568 / 895+
    Dismutation ............................  585 / 364
    Esters from ............................  560 / 243+
    Hydrohalogenation of ...................  570 / 246+
    Mineral oils ...........................  208
    Polymerized solid (see synthetic  
    Resin or natural rubber)  
    Purification ...........................  585 / 800+
    Synthesis ..............................  585 / 500+
Oleic Acid .................................  554 / 223+
Oleomargarine (See Margarine)  
Oleoresin ..................................  530 / 204
Oligomers, Hydrocarbon .....................  585 / 17+
    Synthesis ..............................  585 / 502+
Oliver Hammer for Forging ..................  72 / 445
Omnibuses See Vehicle  
One Shot Motor .............................  60 / 632+
One-Arm Bandit .............................  D21 / 370
Onion  
    Planters ...............................  111 / 910*
Onium Compounds ............................  260
    Antimonium .............................  556 / 64+
    Arsonium ...............................  556 / 64+
    Dyes containing ........................  8 / 654
    Organic acid amine addition ............  562 / 625+
    Oxonium ................................  568 / 557
    Phenol amine addition ..................  564 / 260
    Primary aromatic amines ................  564 / 305+
    Pyridinium .............................  546 / 347
    Quaternary ammonium ....................  564 / 281+
    Quinolinium ............................  546 / 182
    Sulfate esters .........................  558 / 20+
    Sulfonium ..............................  568 / 18+
    Wetting agents .........................  516 / 9+
Onyx .......................................  63 / 32
    Pendants ...............................  63 / 13
Opacifiers .................................  106 / 312
Open Work (See Grille)  
    Building component .....................  52 / 633+
    Decoration .............................  428 / 542.6
Opener and Opening Device  
    Bag opening ............................  493 / 309+
        Closing combined ...................  493 / 255+
        Cutting closing combined ...........  493 / 199+
        Refolding combined .................  493 / 244+
        Web forming cutting closing ........  493 / 199
        X-art ..............................  493 / 963*
    Bottle or jar  
        Cap ................................  215 / 295+
        Stopper in combination .............  215 / 228
        Stopper removal facilitated ........  215 / 295+
    Can cutter .............................  30 / 400+
        Closure opener combined ............  7 / 152+
        Combined ...........................  7 / 152+
    Can or bottle ..........................  D08 / 33
    Closure metallic receptacle ............  220 / 260
    Closure remover ........................  81 / 3.07+
        Combined ...........................  7 / 151+
        Pliers combined ....................  7 / 126+
    Envelope ...............................  83 / 912*
        Cutters ............................  30 / 233
    Inkwell pen actuated ...................  15 / 257.075
    Oyster .................................  452 / 13+
    Paper  
        Bag with tear strip ................  383 / 200+
        Box with tear strip ................  229 / 200+
        Carton or box ......................  30 / 2
        Envelope with tear strip ...........  229 / 307+
    Parachute ..............................  244 / 149
    Railway coupling knuckle ...............  213 / 115+
    Textile fiber ..........................  19 / 80 R+
    Wood box ...............................  408 / 53
Opening of Hydrocarbon Ring ................  585 / 940*
Opera Glass  
    Holders ................................  359 / 409+
    Optics .................................  359 / 795
Operations Research Computerized ...........  705 / 7.11+
    Resource allocation, scheduling ........  705 / 7.12+
Operator  
    Aircraft control .......................  244 / 75.1+
    Automatic ..............................  74 / 2+
    Cabinet component ......................  312 / 319.1+
        Fluid pressure .....................  312 / 319.5+
    Chair  
        Rocking ............................  297 / 260.1+
        Swinging ...........................  472 / 85+
    Clutch .................................  192 / 82 R+
    Coin operated toy money box ............  446 / 8+
    Control lever  
        Hand operated ......................  74 / 491+
        Knee operated ......................  74 / 515 R+
    Controlled guard mechanism .............  74 / 616
    Dial ...................................  74 / 10 R+
    Display control ........................  345 / 501+
    Dumping vehicle  
        Sliding and tilting ................  298 / 14+
        Tilting ............................  298 / 19 R+
    Elevator  
        Car brake ..........................  187 / 351+
        Door ...............................  187 / 316+
        Manual control mechanism ...........  187 / 306+
    Extension ladder .......................  182 / 208
        Lazy tong ..........................  182 / 158
    Figure toy  
        Figure support operated ............  446 / 360
        Link operated ......................  446 / 359+
        Platform operated ..................  446 / 352
    Illumination  
        Dirigible light supports ...........  362 / 37+
        Lantern globe ......................  362 / 174+
        Switches and valves ................  362 / 394
    Insect traps ...........................  43 / 110
    Multiple brake .........................  188 / 105+
    Pump operating means tires .............  152 / 419+
    Railway  
        Draft coupling .....................  213 / 211+
        Turntable ..........................  104 / 36+
    Register ...............................  235 / 91 R
        Fare ...............................  235 / 44+
        Platform operated ..................  235 / 99 R
    Stove or furnace .......................  126 / 169
    Switch multiple circuit ................  200 / 17 R+
Ophthalmic Lenses or Blanks ................  351 / 159+
    Light filtering ........................  351 / 163+
    Multifocal .............................  351 / 168+
Ophthalmometers ............................  351 / 200+
    Objective testing ......................  351 / 205+
    Subjective testing .....................  351 / 222+
Ophthalmoscope .............................  351 / 205+
Opium Alkaloids ............................  546 / 44+
Optics & Optical ...........................  359
    Alignment testing ......................  356 / 138+
    Article molding ........................  264 / 1.1+
    Attenuator  
        With photocell .....................  250 / 227.11
    Coatings ...............................  359
    Delay line  
        With photocell .....................  250 / 227.11
    Design .................................  D16 / 100+
    Device  
        Photo process making ...............  430 / 321
    Equipment design .......................  D16
    Eye examining ..........................  351
    Fiber bundle ...........................  385 / 115+
    Fiber optics ...........................  358 / 901.1*
        With tv camera .....................  348 / 359
        With video display .................  348 / 804
    Fiber rods .............................  385
    Filter  
        Compositions .......................  252 / 582
        Laminated ..........................  359 / 890
    Frequency converter, quasi-optical .....  359 / 326+
    Illusion ...............................  472 / 57+
        Amusement railway ..................  104 / 84
        Thaumatrope ........................  446 / 244
        Zoetrope ...........................  352 / 101
    Image projectors .......................  353
    Instruments see type of instrument  
        Design .............................  D16 / 130+
        Distance ...........................  33 / 707
    Integrated circuit .....................  385 / 14
    Layered recordable media ...............  430 / 270.11
    Measuring & testing ....................  356
    Measuring or testing instrument ........  D10 / 46+
    Medical instrument, fixed ..............  D24 / 172+
    Medical instrument, portable ...........  D24 / 150+
    Motion pictures ........................  352
    Optical(ly) active compounds ...........  359
        Racemisation of ....................  359
        Separation of ......................  359
    Producing-elements from ................  359
    Plastics or substances in a ............  359
    Plastic state ..........................  359
    Semiconductor, coupling to .............  323 / 902
    Sensing apparatus ......................  435 / 808*
    Surveyors instrument ..................  D10 / 61+
    Systems & elements .....................  359
    Teaching ...............................  434 / 303
    Thin film optical waveguide ............  385 / 130+
    Transmission cable .....................  385 / 100+
    Vision testing & correction ............  351
        Chemical analysis, apparatus .......  422 / 82.06
            Fluorescence ...................  422 / 82.07
    Waveguide connecting means .............  385 / 53+
    Waveguide coupling means ...............  385 / 15+
Optode or Optrode  
    Chemical analysis, apparatus ...........  422 / 82.06
        Fluorescence .......................  422 / 82.07
Optometer ..................................  351 / 200+
    Objective testing ......................  351 / 205+
    Subjective testing .....................  351 / 222+
Orange Peel Bucket .........................  37 / 182
Orchard  
    Heating stoves .........................  126 / 59.5
    Mobile sprayer or duster ...............  239 / 77+
    Plant husbandry ........................  47
        Design .............................  D08 / 1
Orchestrion  
    Combined with other instrument .........  84 / 170
    Rotating pin cylinder type .............  84 / 95.1
Order Apparatus  
    Facsimile ..............................  358 / 400+
    Food, automated ........................  705 / 15
    Planographic scriber ...................  33 / 23.01+
Ordnance (See Ammunition; Firearm; .........  89
    Gun) ...................................  89
    Automatic ..............................  89 / 125
    Barrels ................................  89 / 14.05+
    Bomb, flare & signal dropping ..........  89 / 1.51+
    Breech closures ........................  89 / 17+
    Cartridge feeding ......................  89 / 33.01+
    Control data ...........................  235 / 375
    Explosion opened breech ................  89 / 4.05+
    Firing devices .........................  89 / 27.11+
        Electric ...........................  89 / 28.05+
    Fuse setters ...........................  89 / 6+
    Loading ................................  89 / 45+
    Machine guns ...........................  89 / 9
    Making .................................  89 / 14.7
    Measuring and testing ..................  73 / 167
    Mounts .................................  89 / 37.01+
    Pneumatic ..............................  89 / 7+
    Recoilless gun .........................  89 / 1.7+
    Rocket launching .......................  89 / 1.8+
    Shields ................................  89 / 36.01+
    Sights .................................  42 / 111+
    Submarine ..............................  89 / 5
Ore Treatment ..............................  75
    Actinide series compound ...............  423 / 249+
    Apparatus ..............................  266 / 168+
    Beneficiating ores .....................  423 / 1+
    Briquetting ............................  75 / 746+
    Comminutor .............................  241
    Detector (see prospecting)  
    Dressing classifying ...................  209
    Extracting metal compounds from ........  75
    Ores by wet processes ..................  75
Organ and Organette  
    Automatic wind organettes ..............  84 / 92
    Automatic wind organs ..................  84 / 84+
    Barrel .................................  84 / 86
    Chord organs ...........................  84 / DIG 22
    Computer organs ........................  984 / 388+
    Coupler  
        Automatic organ ....................  84 / 168
        Pipe organ .........................  84 / 340+
        Reed organ .........................  84 / 373
    Design .................................  D17 / 5
    Electric  
        Action of wind pipe organ ..........  84 / 337
        Couplers of wind pipe organ ........  84 / 341
        Actions ............................  84 / 341
        Electropneumatic action of .........  84 / 88
        Automatic organ ....................  84 / 88
        Electropneumatic action of .........  84 / 338
        Wind pipe organs ...................  84 / 338+
        Electropneumatic swells of .........  84 / 347
        Wind pipe organs ...................  84 / 347
        Generation of electric tones .......  84 / 600+
    Piano combined with organ ..............  84 / 172
    Pipe organ nonautomatic ................  84 / 331+
    Pipes ..................................  84 / 349+
    Pipes ..................................  984 / 11+
    Reed organ nonautomatic ................  84 / 351+
    Reeds ..................................  84 / 363+
    Trackers and sheets for ................  84 / 148
    Automatic organs .......................  84 / 148
Organic Compounds (See Carbon) ............  260
    Preparation by wave energy .............  204 / 157.15+
    Single-crystal growth processes ........  117
    Solid-state devices ....................  260
    Using organic materials ................  260
Organization, Automated  
    Client request processing ..............  705 / 7.12+
    Finances  
        Financial portfolio, automated .....  705 / 36
        Forecasting ........................  705 / 7.29+
    Inventory ..............................  705 / 28
        Itemization ........................  705 / 29
    Projects ...............................  705 / 7.11+
    Resources ..............................  705 / 7.12+
        Staff time .........................  705 / 7.13+
Organo Sol See Sol  
Organometallic Compounds ...................  556 / 1+
    Acetylacetonates .......................  556 / 40+
    Additives for plastics .................  556 / 1+
    Anthraquinones .........................  552 / 209
    Anti-fouling paints use ................  556 / 1+
    Azo compounds ..........................  534 / 692+
    Azoles .................................  548 / 101+
    Azomethines ............................  556 / 32+
    Diazines ...............................  544 / 225+
    Diazo compounds ........................  534 / 562
    Explosives containing ..................  149 / 23+
    Fibers or fibrous goods treatment ......  556 / 1+
    Higher fatty acid salts ................  554 / 71+
    Macromolecular .........................  556 / 1+
    Oxazines ...............................  544 / 64
    Pesticides or herbicides use ...........  556 / 1+
    Phosphorus containing ..................  556 / 13+
    Protein containing .....................  530 / 400
    Pyridine nucleus containing ............  546 / 2+
    Radioactive metal containing ...........  534 / 10+
    Stabilization ..........................  556 / 2+
    Thiazines ..............................  544 / 4
    Thiocarbamates .........................  556 / 38+
    Triphenylmethanes ......................  552 / 103
Oriental Knot Fabrics ......................  139 / 400
    Looms ..................................  139 / 4+
Oriented-Crystal Growth Processes ..........  117
    Coating apparatus ......................  118
    Non-coating apparatus ..................  117 / 200+
Orienter and Orienting See Turner  
    Antenna ................................  343 / 757+
    Article dispenser ......................  221 / 156+
    Article reorienting device .............  414 / 754
    Cleaning apparatus .....................  134 / 43
    Conveyor article on ....................  198 / 373+
    Conveyor guide .........................  193 / 44
    Cutter with ............................  99 / 549
    Earth boring tool parts ................  175 / 85
    Furnace charger bucket .................  414 / 153
    Tool driving or impacting device .......  173 / 39
    Vehicle load body ......................  414 / 383+
    Well drills  
        Bore deflection ....................  175 / 61
            Control by electrical ..........  340 / 853.3+
            Communications system ..........  340 / 853.3+
        Formation logging ..................  73 / 152.01+
        Inclinometer .......................  33 / 365+
    Whipstocks .............................  166 / 117.5+
Orifice in Conduit .........................  138 / 40+
    Cabinets with ..........................  312 / 204
ORLON™    (Polyacrylonitrile) ..............  526 / 341
Ornaments and Ornamental Devices  
    Aquarium ...............................  119 / 253+
    Bedpost ................................  5 / 281
    Block molds ............................  425 / 412+
    Building construction ..................  52 / 311.1+
    Candles ................................  431 / 125
    Chain ..................................  59 / 80+
        Design .............................  D11 / 13
    Coating non-uniform ....................  427 / 256+
    Electroforming .........................  205 / 72
    Electroplating .........................  205 / 120+
    Elements superposed ....................  428 / 77+
    Fountains ..............................  239 / 17+
    Harness ................................  54 / 76
    Heating stove ..........................  126 / 219
    Illuminated, x-art .....................  362 / 806*
        Figure .............................  362 / 808*
        Imitation candle ...................  362 / 810*
        Psychedelic light ..................  362 / 811*
        Star ...............................  362 / 807*
        Terrestrial globe ..................  362 / 809*
    Jewelry ................................  63 / 20
        Design .............................  D11 / 1+
    Layer sectional ........................  428 / 44+
    Layer varying thickness ................  428 / 156+
    Lighting & illumination ................  362 / 806*
    Metal ornamenting ......................  29 / DIG 30
    Paper box ..............................  229 / 116.1
    Photographic process ...................  430 / 269+
    Plant beds .............................  47 / 33
    Seasonal or religious ..................  D11 / 121+
    Shoe ...................................  2 / 245
    Special occasion .......................  428 / 7+
    Stitched ...............................  112 / 439
    Textile cloth ..........................  26 / 69 R
        Napping ............................  26 / 30
        Shearing ...........................  26 / 16
    Vehicle body ...........................  428 / 31
    Wall decoration ........................  D11 / 131+
Orthicon Cathode Ray Tube ..................  313 / 373+
    Television system using ................  348 / 329
Orthodontic Devices ........................  433 / 2+
    Appliance making .......................  29 / 896.11
    Implements .............................  433 / 3+
Orthopedics  
    Ankle supports and braces ..............  602 / 65
        Skates with ........................  280 / 11.36
    Appliance ..............................  D24 / 190+
    Arch supports ..........................  36 / 71
    Boot or shoe ...........................  36 / 140+
    Cortical plate .........................  606 / 280+
    Implant ................................  D24 / 155
    Pressure distribution testing ..........  73 / 172
    Shoe making ............................  12 / 142 N
        Miscellaneous parts ................  12 / 146 M
    Shoe pads ..............................  36 / 71
    Spinal positioner/stabilizer ...........  606 / 246+
    Surgical ...............................  36 / 140+
Orthoquinones ..............................  552 / 291
Oscillation Circuit  
    Generator ..............................  331
    Therapeutic treatment type .............  607 / 76
Oscillator .................................  331
    Audio ..................................  331
    Coil electric ..........................  336
    Electronic .............................  331
        Hartley type .......................  331 / 170
            Transistor .....................  331 / 108 R
        Multi phase ........................  331 / 45
        Tuned circuit for ..................  334
    Feed conveyer, oscillating-type ........  209 / 921*
    Laser beam applications  
    Logic gate active element ..............  331 / DIG 3
    Phase locked loop having locd ..........  331 / DIG 2
    Indicating or detecting means ..........  331 / DIG 2
    Tetrode ................................  331
    Time measurement .......................  968 / 844+
Oscillographs (See Oscilloscope)  
    Cathode ray tube circuits ..............  315 / 1+
    Cathode ray tube structure .............  313 / 364+
    Design .................................  D10 / 76+
    Electrical quantity measurement ........  324 / 97
        Cathode ray type ...................  324 / 121 R
    Facsimile systems ......................  358 / 296+
    Photographic recorder ..................  346 / 107.3+
    Plural function recorder ...............  346 / 45+
    Steam engine indicator .................  346 / 3+
Oscilloscope (See Oscillograph) ...........  D10 / 76
    Cathode ray tube system ................  315 / 1+
        Chemical analysis, apparatus .......  422 / 82.08
    Expanded scale .........................  324 / 131
        Cathode ray ........................  324 / 121 R
    Meter ..................................  324 / 97
        Cathode ray type ...................  324 / 121 R
    Television .............................  348 / 325+
    Tube structure .........................  313 / 364+
Osmium  
    Alloys .................................  420 / 461
    Hydrometallurgy ........................  75 / 711+
    Pyrometallurgy .........................  75 / 631
Osmosis See Desalting Seawater  
Osones or Osozones .........................  536 / 1.11+
Osteal Adjuster ............................  606 / 237+
Otec, Ocean Thermal Energy Conversion ......  60 / 641.7
Otoscope ...................................  600 / 200
Otterboard, Trawl Net Type .................  43 / 9.7
Ottoman ....................................  297 / 462
Outboard Motor .............................  440 / 53+
    Container or package for ...............  206 / 319
Outer Garment ..............................  2 / 115+
Outlet  
    Box  
        Digest .............................  33 / DIG 10
        Electric conduit ...................  174 / 50+
        Electric connector .................  439 / 892+
        Electric junction box ..............  220 / 3.2+
        Support ............................  248 / 906*
    Conduit wiring .........................  439 / 207+
        Support ............................  248 / 27.1+
    Cover or escutcheon plate ..............  D08 / 350+
    Decanter ...............................  210 / 109+
    Distillation vapor .....................  196 / 136
    Drinking fountain  
        Catch basin ........................  239 / 28+
        Faucet combined ....................  239 / 25+
    Muffler ................................  181 / 238
    Nozzle .................................  239
    Outlet plug ............................  D13 / 137.1+
    Pneumatic stacker tube .................  406 / 154+
    Pressure control  
        Fluid pressure brake ...............  303 / 59+
        Fluid pressure regulator ...........  137 / 505+
    Smoking device stem ....................  131 / 229
    Sprinkler pipe .........................  239 / 266+
    Stratifier .............................  209 / 494
    Supply outlet for sink or bath .........  4 / 675+
    Ventilation  
        Building ...........................  454 / 339+
        Cowl ...............................  454 / 3+
        Vehicle ............................  454 / 69+
    Wall mounted electric conduit ..........  174 / 490
    Water closet valve  
        Siphon .............................  4 / 368+
        Valve ..............................  4 / 378+
    Water closet ventilation ...............  4 / 218
Outriggers  
    Awning type  
        Multipart ..........................  160 / 78+
        Rigid ..............................  160 / 83.1
        Swinging ...........................  160 / 81+
    Vehicle ................................  280 / 763.1+
        Crane ..............................  212 / 301+
Outsoles ...................................  432 / 120+
Ovens and Accessories (See Heat) ..........  432 / 120+
    Coke ...................................  202 / 81+
    Cooking ................................  126
    Design, household ......................  D07 / 348+
    Design,special use .....................  D15 / 144.1
    Distilling .............................  202
    Drying .................................  34
    Electric ...............................  219 / 391+
    Lights .................................  362 / 92
Overalls  
    Nether type ............................  2 / 227+
    Union type .............................  2 / 79
Overcoat ...................................  2 / 85+
Overcoming Dead Center .....................  74 / 36
Overflow  
    Conneyer art ...........................  198 / 954+
    Decanter and filter ....................  210 / 299+
    Down surface of liquid heater ..........  126 / 359.1
    Filling portable receptacle ............  141 / 115
    Gas and liquid contact baffle ..........  261 / 114.1
    Open top liquid heating vessel .........  126 / 383.1+
    Sink or bath ...........................  4 / 680+
    Textile machine ........................  68 / 208
    Trough .................................  261 / DIG 44
    Water closet  
        Outlet valve .......................  4 / 390+
        Outlet valve float .................  4 / 395+
        Siphon bowl ........................  4 / 427+
    Water control gate .....................  405 / 101
Overlaps ...................................  2 / 121
Overload  
    Automatic weighers .....................  177 / 82
    Fluid receptacle filling devices .......  141 / 115+
    Relay  
        Electric trips .....................  335 / 21+
        Thermal current trips ..............  337 / 70
        Thermal trips ......................  337 / 356+
    Release  
        Comminution apparatus ..............  241 / 32
        Earthworking implements ............  172 / 261+
            Bulldozer ......................  172 / 816
            Hydraulic control ..............  172 / 260.5
        Elastic couplings ships ............  114 / 217
        Flexible shaft couplings ...........  464 / 30+
        Motor vehicle trains ...............  180 / 14.5
        Pitmans and connecting rods ........  74 / 584+
        Planetary gearing ..................  475 / 263+
        Plows ..............................  172 / 261+
        Snow plows .........................  37 / 232+
        Tools ..............................  81 / 467+
        Torque responsive clutches .........  192 / 56.1+
        Trailer couplings ..................  280 / 449+
    Stop ...................................  192 / 150
        Spring wheels ......................  152 / 18
    Support movable or disengageable on ....  248 / 900*
    Impact or overload .....................  248 / 900*
Overshoes  
    Horse ..................................  168 / 1+
        Design .............................  D30 / 146+
    Mens ...................................  36 / 7.1 R+
        Design .............................  D02 / 896+
    Pocket .................................  D02 / 857
Overthrow Preventer ........................  235 / 131 R
Overwinding Preventer  
    Clocks electrically wound ..............  968 / 443+
    Spring motor combined ..................  185 / 43
        Plural motors ......................  185 / 13
    Watch or clock key combined ............  81 / 467
    Watches combined .......................  368 / 209
    Weight motor combined ..................  185 / 35
Ox  
    Shoe ...................................  168 / 5
        Making .............................  59 / 70
    Yoke ...................................  54 / 77
Oxacillin ..................................  540 / 327
Oxadiazoles, 1,2,3- ........................  548 / 125
Oxadiazoles, 1,2,4- ........................  548 / 131+
Oxadiazoles, 1,2,5- ........................  548 / 125
Oxadiazoles, 1,3,4- ........................  548 / 143+
Oxalic Acid ................................  562 / 597
Oxazines ...................................  544 / 63+
    Bio-affecting & body treating ..........  514 / 228.8+
    Composition ............................  514 / 228.8+
Oxazoles ...................................  548 / 215+
    Oxazoles, 1,2- .........................  548 / 240+
    Oxazoles, 1,3- .........................  548 / 215+
Oxazolidones ...............................  548 / 225+
Oxidants  
    Bound solid fuel .......................  44 / 558
Oxidation (See Substance Produced)  
    Absorbent regeneration .................  502 / 20+
    Alcohols  
        Acyclic ketone production ..........  568 / 402
        Aldehyde production ................  568 / 471+
        Carboxylic acid production .........  562 / 418+
    Aldehydes to produce acids .............  562 / 418+
    Aldehydes to produce acids .............  562 / 531+
    Bleaching (see bleaching)  
    Carbon monoxide ........................  423 / 418.2
    Compositions ...........................  252 / 186.1+
    Compounds for ..........................  149 / 119*
    Dyeing .................................  8 / 649
        Oxidizable dyes ....................  436 / 904*
    Electrolytic ...........................  205
    Fermentative ...........................  435
    Glyceride oils .........................  554 / 132+
        Purification by ....................  554 / 181+
    Hydrocarbons  
        Acyclic acid production ............  562 / 542+
        Anthracene .........................  552 / 208
        Aromatic acid production ...........  562 / 408+
        Aromatic to acid anhydrides ........  549 / 231+
        Electrolytic .......................  205 / 462+
        Electromagnetic ....................  204 / 157.15+
        Electrostatic ......................  204 / 169
        Mineral oil ........................  208 / 3+
        Nonaromatic mixtures ...............  568 / 950+
            Preparing acyclic aldehydes ....  568 / 469.9
            Preparing acyclic carboxylic ...  560 / 241.1
            Acids esters ...................  560 / 241.1
            Preparing acyclic carboxylic ...  562 / 512.2+
            Acids ..........................  562 / 512.2+
            Preparing acyclic hydroxy ctg ..  568 / 910.5
            Compounds ......................  568 / 910.5
            Preparing acyclic ketones ......  568 / 398.8
            Preparing fats, fatty oils, ....  554 / 132+
            Ester-type waxes or higher .....  554 / 132+
            Fatty acids ....................  554 / 132+
        Olefines to epoxy compounds ........  549 / 523+
    Liquid purification ....................  210 / 758+
        Sewage treatment ...................  210 / 601+
    Metallurgy .............................  75
    Metals .................................  23
        Surface ............................  148 / 284+
    Nonmetals ..............................  23
    Resins natural .........................  530 / 200+
Oxides  
    Heat producing compositions ............  149 / 37+
    Iron ...................................  423 / 632
    Magnesium ..............................  423 / 635
    Metal ..................................  423 / 579
        Alkali .............................  423 / 594.15
        Alkali earth .......................  423 / 583
    Nitrogen ...............................  423 / 400+
        Combustion control .................  60 / 900*
        Electrostatic ......................  204 / 179
    Phosphorus .............................  423 / 304
    Sulfur .................................  423 / 512.1+
    Titanium ...............................  423 / 608
        Electrosynthesis ...................  205 / 538
Oxidized Hydrocarbons of Undetermined ......  568 / 959
    Structure ..............................  568 / 959
Oximes .....................................  564 / 253+
    Acyclic ................................  564 / 268
    Alpha oxy or oxo .......................  564 / 258
    Aromatic ...............................  564 / 265+
    Cyclohexanone ..........................  564 / 267
    O-carbamoyl ............................  564 / 255
    O-esters ...............................  564 / 254+
    O-ethers ...............................  564 / 256+
    Preparation ............................  564 / 259+
Oximeters ..................................  356 / 41
    Design .................................  D24 / 169
    Ear attached ...........................  600 / 340
Oxindole ...................................  548 / 484+
Oxirane ....................................  8 / DIG 8+
Oxolinic Acid, in Drug .....................  514 / 291
Oxonium ....................................  568 / 557
Oxy Containing Carboxylic Acid Esters  
    Acyclic ................................  560 / 179+
    Alicyclic ..............................  560 / 126
    Aromatic ...............................  560 / 55+
Oxyacetylene Gas Torches ...................  239 / 398+
Oxychlorid .................................  423 / 462
    Cement .................................  106 / 685+
Oxygen .....................................  423 / 579+
    Blood oxygenators ......................  261 / DIG 28
    Electrolytic synthesis .................  205 / 633+
    Generative composition .................  252 / 186.1+
    Liquefaction ...........................  62 / 606+
    Mask ...................................  128 / 205.25
    Rings ..................................  549 / 200+
        Azo compound containing ............  534 / 751+
        Oxazine ............................  544 / 63+
        Oxazole ............................  548 / 215+
        Sulfurized .........................  549 / 200+
    Tent ...................................  128 / 205.26
    Tests for determining  
        Biochemical oxygen demand, bod .....  436 / 62
        Chemical oxygen demand, cod ........  436 / 62
        Total oxygen demand, tod ...........  436 / 62
Oxyhalogenation of Hydrocarbons ............  570 / 224
Oxysulfate .................................  106 / 683+
Oxytocin ...................................  530 / 315
Oyster  
    Culturing ..............................  119 / 234+
    Dredger ................................  37 / 315+
    Opener .................................  452 / 13+
    Scoop ..................................  37 / 315+
    Scoop ..................................  37 / 411
Ozone ......................................  423 / 581
    Electrostatic field or electrical ......  204 / 176
    Discharge synthesis ....................  204 / 176
        Generators .........................  422 / 186.07+
    Food treatment .........................  426 / 236
    Liquid purification ....................  210 / 760
        Preliminary manufacture ............  210 / 192
Ozonides ...................................  549 / 430+
Ozonizer  
    Electromagnetic wave energy or .........  422 / 186.07+
    Gas & liquid contact apparatus .........  261 / DIG 42
    Inhaler ................................  128 / 202.25
    Process ................................  62 / 78
    Refrigeration combined .................  62 / 264

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