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I-Beam .....................................  52 / 729.1+
    Cutter .................................  83 / DIG 2
Ic Card ....................................  705 / 41
    For secure, encrypted transactions .....  705 / 65
        Balancing account ..................  705 / 68
        Detecting double spending ..........  705 / 69
        With authentication ................  705 / 67
    Initializing or reloading ..............  705 / 66
Ice ........................................  62
    Bag ....................................  383 / 901*
        Carrier ............................  294
        Design .............................  D24 / 207+
    Boats ..................................  114 / 43
    Boring .................................  175 / 18
    Boxes ..................................  62 / 459+
        Air controller combined ............  62 / 420+
        Portable receptacle ................  62 / 457.7
        Portable, commodity containing .....  62 / 371+
    Breakers ...............................  114 / 40+
    Bucket .................................  D07 / 603
    Control on waterways ...................  405 / 61
    Crushers ...............................  241
        Hand tool ..........................  D07 / 682
        Household appliance ................  D07 / 374
    Crushing apparatus .....................  241
    Cutting (see notes to) ................  30 / 164.5
        Electrically heated cutter .........  30 / 140
        Hand held ..........................  30 / 140
        Heated cutter ......................  62 / 320+
        Ice cream freezer with .............  62 / 321
        Machine ............................  83 / 171
        Machines cutting, x-art ............  83 / 915.3*
        Sawing .............................  83 / 915.3*
    Food ...................................  426 / 101+
    Gas solidifiers ........................  62 / 601+
    Grooving ...............................  83 / 875+
    Harvesting .............................  299 / 24+
    Houses and cellars .....................  62 / 459+
        Air controlling combined ...........  62 / 420
        Structural installation ............  62 / 259.1+
    Machine for producing ..................  62 / 340+
        Automatic ..........................  62 / 135+
    Making (see congelation) ..............  D15 / 80
    Picks and shavers  
        Chipper or pick ....................  30 / 164.5
        General ............................  241
        Harvesting cutters and picks .......  299 / 24+
        Holder for .........................  224 / 232+
        Ice pick or chipper ................  30 / 164.5+
        Knives and scrapers with ...........  30 / 136
        Material holder or disposal ........  30 / 136+
    Prevention on aircraft .................  244 / 134 R
    Prevention on cooling tower ............  261 / DIG 86
    Preventive coating .....................  106 / 13
    Processes of making ....................  62 / 66+
    Protecting marine structure from .......  405 / 211
    Removal from streets ...................  37 / 197
    Removal from windows ...................  62
    Thawing  
        Compositions for ...................  252 / 70
        From streets .......................  37 / 227+
        Pipes ..............................  138 / 32+
        River and harbor ...................  405 / 61
    Tray design ............................  D15 / 90
Ice Cream ..................................  426 / 101
    Agitator for freezer ...................  366 / 144+
    Cabinets for ...........................  220 / DIG 8
    Cans for refrigeration .................  62 / 433
    Cone ...................................  426 / 139
        Carriers for cones .................  229 / 932+
        Design .............................  D01 / 116+
    Cup ....................................  D01 / 116
    Cutting ................................  83
    Design .................................  D01
    Disher, cone shaping ...................  425 / 118
    Freezer ................................  62 / 340+
        Automatic ..........................  62 / 135+
        Tray ...............................  366 / 144
        With ice breaker ...................  62 / 321
    Machine design .........................  D15 / 82
    Molding ................................  426 / 515+
    Package vending cabinets ...............  221
    Process of freezing ....................  62 / 66+
    Product and making .....................  426 / 565+
    Scoop ..................................  425 / 221
    Scoop ..................................  425 / 276+
    Scoop or plunger .......................  425 / 187
    Serving tool ...........................  D07 / 681
    Stick, on a ............................  D01
Ice Skates .................................  280 / 11.12+
    Attachments for ........................  280 / 809+
    Design .................................  D21 / 761+
    Scabbards ..............................  280 / 825
Ichthyol ...................................  562 / 33
Icing ......................................  426 / 659
    Edible coating applying machines .......  118 / 13+
    Processes for applying .................  99
Icon .......................................  D14 / 489+
Iconometer .................................  33 / 227+
    Camera viewfinder ......................  396 / 373+
    Range & remote distance finding ........  356 / 3
    Optics .................................  356 / 3
Iconoscope .................................  313 / 367+
    Television system using ................  348 / 325
Identification  
    Agents, chemical or biological .........  436
    Analysis ...............................  436
    Arm band ...............................  40 / 1.5
    Badges .................................  40 / 1.5+
        Design .............................  D20 / 22+
    Card ...................................  428 / 13
        Envelope for .......................  206
        With printing ......................  283 / 74+
    Checks labels and tags .................  283 / 81
    Dyeing .................................  8
    Electrical conductors ..................  174 / 112
    Fingerprint, comparisons ...............  356 / 71
    Fraud preventing coating ...............  427 / 7
    Itemization, automated .................  705 / 29
    Key locks ..............................  70 / 460
        Key ................................  40 / 330
    Of medicine or poison ..................  424 / 10.1+
    Plug tobacco ...........................  131 / 368
    Printed matter .........................  283 / 74+
    Signals and indicators .................  116
    Tag ....................................  283 / 74+
    Using a point of sale terminal .........  705 / 23
    Writing on photographic film ...........  396 / 310+
        During x-ray exposure ..............  378 / 165
Idlers (See Machine on Which Used)  
    Bearing ................................  384 / 262
    Belt ...................................  474 / 166+
    Metal rolling  
        Mill ...............................  72 / 199+
        Roll ...............................  72 / 199
    Pulleys ................................  474 / 166+
        Belt tightener .....................  474 / 101+
IgEPON™    .................................  554 / 85+
Igniter and Ignition See Lighter  
    Alarms operated by .....................  116 / 104+
        Electrical .........................  340 / 385.1
    Ammunition and explosive devices  
        Cartridges .........................  102 / 470+
        Compositions for ...................  149 / 108.6
        Land mines .........................  102 / 424+
        Marine mines .......................  102 / 416+
        Shells .............................  102 / 200+
    Burner .................................  431
        Automatic control of ...............  431 / 18
        Electrical .........................  431 / 254+
        Electrical .........................  431 / 258+
        Mechanical .........................  431 / 129+
        Mechanical .........................  431 / 254+
    Catalytic ..............................  431 / 268
        Pocket type ........................  431 / 147
    Chemical ...............................  431 / 267+
    Cigarette, pocket type .................  431 / 129+
    Cigarette, pocket type .................  431 / 144+
        By electrical means ................  361 / 235+
        Design .............................  D27 / 141+
        Electrical resistance ..............  219 / 260+
        Tobacco appliance with .............  131 / 234
        Tobacco with .......................  131 / 351
    Combustion engine combined with ........  123 / 210+
    Rotary piston ..........................  123 / 210+
    Electric (see engine)  
        Blasting cartridge .................  102
        Cartridges .........................  102 / 202.2+
        Explosive land mines ...............  102 / 424+
        Flash lights solid fuel ............  431 / 357+
        Flash lights solid fuel ............  431 / 357+
        Fluid fuel burners .................  431 / 254+
        Fluid fuel burners .................  431 / 256+
        Interference suppressor ............  338 / 66+
        Resistor ...........................  338 / 66+
        Resistance type ....................  219 / 260+
        Shells .............................  102 / 206+
        Spark type .........................  361 / 253+
        Time controlled ....................  431 / 73
    Electric space discharge devices  
        Consumable electrode type ..........  314
        Energizing systems .................  315
    Engine .................................  123 / 594+
        Dynamo combined ....................  290
        Spark timing control ...............  123 / 406.11+
        Starting ...........................  123 / 406.53+
    Fire kindling ..........................  431 / 267+
    Flashlight combined ....................  431 / 357+
        Electric primer ignites ............  431 / 362
    Fluid-flint lighter ....................  431 / 144+
    Frictional .............................  431 / 267+
    Fuse ...................................  493 / 948*
    Igniting devices & fuel ................  44
    Lamp system combined with spark ........  315 / 178+
    Make and break for .....................  123 / 153
    Internal combustion engines ............  123 / 153
    Matches ................................  44 / 507+
        Boxes and packages .................  206 / 96+
            Design .........................  D09 / 414+
            Matchbook design ...............  D09 / 701
        Compositions .......................  149
        Scratchers .........................  44 / 643
    Motor vehicle, internal combustion .....  123 / 143 R+
    Engine equipped ........................  123 / 143 R+
        Safety belt responsive to ..........  180 / 270
        Ignition circuit ...................  180 / 270
    Percussive .............................  431 / 267+
    Receptacle combined  
        Cigarette or cigar dispenser .......  221 / 136+
        Match boxes and packages ...........  206 / 96+
        Pocket cigarette or cigar ..........  206 / 85
        Containers .........................  206 / 85+
    Reigniting hot spot ....................  431 / 347
    Speader for ignition wire manifold .....  D08 / 357
    Timing .................................  431 / 86+
    Tobacco or tobacco users  
    Appliances combined  
        Ash trays ..........................  131 / 234
        Ash trays design ...................  D27 / 143+
        Cigar end cutter ...................  131 / 249
        Cigars or cigarettes ...............  131 / 185
        Pipes or cigarette holders .........  131 / 185
Ignitron (See Electric Space  
    Discharge device)  
Illuminated  
    Changeable exhibitor ...................  40 / 452
        Combined unit ......................  362 / 253
    Clock ..................................  368 / 82
    Compact ................................  132 / 288
        Design .............................  D28 / 64.1
        Electric ...........................  362 / 135
    Dispenser ..............................  222 / 113
    Fare box ...............................  232 / 13
    Fountain ...............................  239 / 18+
    House number ...........................  40 / 584+
        Self-luminous ......................  250 / 462.1
    Knobs ..................................  362 / 100
    Liquid level gauge .....................  73 / 293
    Picture frame ..........................  40 / 714
    Radio dial .............................  116 / 241+
    Refrigerators ..........................  62 / 264
    Semaphore arm ..........................  246 / 483
    Sign ...................................  40 / 541+
        Combined sources of ................  362 / 253
        Illumination .......................  362 / 253
        Fiber optic, ie light pipe .........  40 / 547
    Trap ...................................  43 / 113
    Vehicle direction indicator  
        Pivoted ............................  116 / 54
        Rotatable casing ...................  116 / 49
        Rotatable pointer ..................  116 / 48
    Weighing scale .........................  177 / 177+
Illuminating  
    Gas (see gas, heating & ................  48
    Illuminating) ..........................  48
        Liquefying apparatus ...............  62 / 606+
        Liquefying process .................  62 / 606+
        Purifying ..........................  423 / 210
Illumination ...............................  362
    Ammunition and explosive devices .......  102 / 513
    With tracer ............................  102 / 513
    Bedroom lighting .......................  362 / 801*
    Buoys ..................................  441 / 13+
    Cabinets with ..........................  312 / 223.5
    Dental or surgical spotlight ...........  362 / 804*
    Diagnostic type reflector ..............  600 / 247
    Direction indicator ....................  33 / 348
    Dispenser ..............................  222 / 113
    Drying apparatus .......................  34 / 88
    Egg candling ...........................  356 / 52+
    Electric lamp supply systems ...........  315
    Electrophotographic copier .............  399 / 177+
    Endoscopes .............................  600 / 160+
    Fans with ..............................  416 / 5
    Fountains ..............................  362 / 101
    Gags surgical ..........................  600 / 235+
    Gas generation .........................  48
    Horticultural ..........................  362 / 805*
    Light emitting diode ...................  362 / 545*
    Liquid level or depth gage .............  73 / 293
    Liquid level or depth gage .............  362 / 461+
    Optical testing ........................  356
    Ornamental or decorative lighting ......  362 / 806*
        Candle imitation ...................  362 / 810*
        Figure .............................  362 / 808*
        Globe ..............................  362 / 809*
        Psychedelic ........................  362 / 811*
        Star ...............................  362 / 807*
    Parachute flares .......................  102 / 337+
    Pharyngoscopes .........................  600 / 160+
    Photo safe lamp ........................  362 / 803*
    Pivoted type specula ...................  600 / 184+
    Pyrotechnics rockets ...................  102 / 347+
    Radio dial .............................  116 / 241+
    Shells with ............................  102 / 513
    Signs ..................................  362 / 812*
    Stoves heating and illuminating ........  126 / 97
    Stoves illuminating lid or top .........  126 / 213
    Switch position or condition ...........  362 / 464+
    Responsive .............................  362 / 464+
    Testing illuminating fluids ............  73 / 36
    Tongue depressors ......................  600 / 240+
    Torches ................................  102 / 336+
    Toys with electric .....................  446 / 485+
        Vehicle simulation .................  446 / 438+
Illuminators See Illumination  
Illusion  
    Amusement ..............................  472 / 57+
        Building structure .................  472 / 74
    Railway amusement vehicle ..............  104 / 83
        Optical ............................  104 / 84
        Physical ...........................  104 / 85
Image Analysis .............................  382
    Biomedical application .................  382 / 128
    Error checking or correction ...........  382 / 309
    Histogram processing ...................  382 / 168
    Image compression ......................  382 / 272
    Image enhancement ......................  382 / 254
    Image segmentation .....................  382 / 173
    Image transformation ...................  382 / 276
    Medical diagnostic .....................  128 / 922*
    Neural networks ........................  382 / 156
    Pattern recognition ....................  382 / 181
    Personnel identification ...............  382 / 115
    Reading paper currency .................  382 / 135
    Robotics ...............................  382 / 153
Image Dissector Television .................  348 / 207.99+
    Cathode ray tube system ................  348 / 325+
        Color ..............................  348 / 284+
        Tube structure .....................  313 / 373+
Image, Generation, Control .................  345 / 418+
    Animation ..............................  345 / 473+
    Three dimensional ......................  345 / 419+
Image, Latent ..............................  428 / 29+
    Electrophotographic copier .............  399 / 130+
    Formed or developed ....................  427 / 145
    Hidden answer ..........................  434 / 328
    Hidden answer ..........................  434 / 348
    Hidden code or watermark printing ......  358 / 3.28
    Illuminated signs ......................  40 / 541+
Imbibition Printing ........................  101 / 464
Imbrication  
    Electrophotographic copier .............  399
Imidazobenzodiazepine ......................  540 / 562
Imidazobenzodiazepinone ....................  540 / 498
Imidazoles .................................  548 / 335.1+
    Fused polycarboxylic imide .............  546
Imidazolidines .............................  548 / 300.1+
Imidazolidones .............................  548 / 316.4+
Imidazolines ...............................  548 / 347.1+
Imides (See Amides)  
    Indole nucleus ctg .....................  548 / 473+
    Naphthostyrils .........................  548 / 437
    Polycarboxylic .........................  546
Imidic Acid Esters .........................  558 / 6+
    Hydroximidic acid esters ...............  558 / 7
    Pseudo ureas ...........................  558 / 8
Imidic Acid Halides ........................  562 / 802+
    Isocyanide dihalides ...................  562 / 803
Imitations (See Artificial)  
    Candle fixture or support ..............  362 / 392
    Cane umbrella case .....................  135 / 18
    Firearm, flashes light .................  362 / 112
    Marble in plastic ......................  264 / 73+
    Plural modules on wall  
        Static mold for making .............  249 / 16
    Stage ..................................  472 / 57+
        Props ..............................  472 / 75+
    Static mold shaped to ..................  249 / 55
    Simulate product of nature .............  249 / 55
    Stitch on shoe .........................  12 / 32
    Water pistol type dispensers ...........  222 / 78+
Immersing and Immersion  
    Abrading ...............................  451 / 113
        Scouring ...........................  451 / 104+
    Boiler or deep fat fryer type ..........  99 / 403+
    Clothes washing ........................  68
    Coating ................................  118 / 400+
        Method .............................  427 / 430.1+
    Dish and solids washing ................  134 / 43+
    Electric heater ........................  392 / 497+
    Electric heater ........................  219 / 523
    Filling portable receptacles ...........  141 / 110+
    Sterilizing ............................  422 / 301+
    Tumbler cleaning with brushing .........  15 / 76
    Water heater ...........................  126 / 348
    Welding apparatus ......................  427 / 430.1+
Immunizing  
    Antigens ...............................  424 / 184.1+
    Cellulose fibers .......................  8 / 120+
    Ferments ...............................  435 / 245
    Sera ...................................  424 / 130.1+
Immunoassay ................................  436 / 818*
Immunoglobulins ............................  530 / 387.1
Immunological Testing ......................  436 / 500+
Impact  
    Absorbtion by flexible barrier  
        By flexible barrier ................  49 / 9
        By plastic deformation .............  188 / 371+
        By resilient deformation ...........  188 / 268
    Comminutor  
        By fluid stream ....................  241 / 39+
        By materials impact ................  241 / 5
        By moving surfaces .................  241 / 27
        Hammer mills .......................  241 / 185.5+
    Drive device for tool ..................  173 / 90
    Measuring ..............................  73 / 492
    Metal extruding by .....................  72 / 267
    Mining machine .........................  299 / 69
    Operated or operation  
        Assembling or disassembling ........  29 / 275
        Bump release of ....................  49 / 364
        Closure ............................  49 / 364
        Clutch .............................  173 / 93.5+
        Cutter .............................  30 / 277
        Mail catcher load release ..........  258 / 25
        Mail catcher load release ..........  258 / 11
        Combined ...........................  258 / 11+
        Solid material separation ..........  209
        Valve ..............................  251 / 76
    Plates .................................  198 / 956*
    Recorders ..............................  346 / 7
    Scale removal by .......................  29 / 81.15
    Support movable or disengageable on ....  248 / 900*
    Impact or overload .....................  248 / 900*
    Testing by .............................  73 / 12.01+
        Hardness ...........................  73 / 82
        Shear strength by ..................  73 / 844
    Tools  
        Assembling or diassembling .........  29 / 275+
        Awl or prick punch .................  30 / 367
        Cutter blade mechanism .............  30 / 277
        Drilling bits ......................  175 / 414+
        Electric motor .....................  310 / 15+
        Electric motor systems .............  318 / 114
        Holders ............................  81 / 487
        Internal impact element ............  81 / 463+
        Jack hammer type ...................  175 / 189
        Mining or disintegrating ...........  299 / 37.3+
        Punch ..............................  30 / 367
        Pusher or puller eg explosive ......  29 / 254
        Operated ...........................  29 / 254+
        Stonemasons ........................  125 / 40+
        Tunneling ..........................  405 / 132+
    Welding apparatus ......................  228 / 24
    Wrenches ...............................  81 / 463
Impaling (See Point; Prong)  
    Closure remover combined ...............  81 / 3.47
        Impaling only eg cork screw ........  81 / 3.48+
    Cooker electrode .......................  99 / 358
    Cooker spit ............................  99 / 419+
    Dispenser ..............................  221 / 213+
    Endless conveyor .......................  198 / 692+
    Rake endless chain .....................  56 / 400.03
    Support spiked .........................  211 / 125
    Support stacked article ................  211 / 54.1+
    Traps ..................................  43 / 77+
Impedance (See Condenser; Inductance;  
    Resistance)  
    Alternating current regulators .........  323
    Anti inductive telephone system ........  379 / 416+
    Arc lamp frame with ....................  314 / 132
    Branched ...............................  333 / 124+
    Coupler ................................  333 / 24 R+
    High frequency type ....................  333
    In amplifier coupling see  
    Amplifier  
    Inductances ............................  336
    Loaded signaling circuit ...............  178 / 45+
    Long signaling lines ...................  333 / 236+
    Matching ...............................  333 / 32+
    Testing of .............................  324 / 691+
        Mechanical vibration ...............  73 / 574+
    Transformers ...........................  336
    Variable inductance ....................  336
    Variable transformer ...................  336
    With antenna ...........................  343 / 860+
        Plural path ........................  343 / 852
Impellers See Propellers ...................  416
    Compressor  
        Expansible chamber .................  418
        Jet pump combined ..................  417 / 76+
        Screw ..............................  415 / 71+
    Fluid reaction surfaces ................  416
    Gas and liquid contact apparatus .......  261 / 84+
    Making  
        Machines ...........................  29 / 23.51
        Process ............................  29 / 889+
    Pump  
        Centrifugal ........................  416 / 179+
        Expansible chamber .................  418
        Screw ..............................  415 / 71+
    Textile impulsing ......................  68 / 134
Implant  
    Controlled release of medicines ........  604 / 891.1
    Dental .................................  433 / 173
    Reservoirs .............................  604 / 93.01
        Under skin .........................  604 / 288.02
    Securing conduit to body ...............  604 / 175
    Synthetic resin compositions for .......  523 / 105+
    Synthetic resin used for ...............  525 / 937*
Implements (See Instrument; Tool)  
    Coating or cleaning ....................  15 / 104.001+
        Material supply combined ...........  401
    Cutter .................................  30
    Earthworking ...........................  172
        Bulldozer ..........................  172 / 811+
    Embroidering ...........................  112 / 80.03+
    Flatiron ...............................  38 / 74+
    Handling ...............................  294
    Igniting ...............................  431 / 267+
    Making .................................  76
    Pushing ................................  254
    Sampling ...............................  73 / 864+
    Snow excavating ........................  37 / 196+
    Splicing ...............................  57 / 23
Impregnated  
    Coating implement ......................  15 / 104.93+
    Product of nature ......................  428 / 15+
    Stone ..................................  428 / 540
    Textile ................................  442 / 59+
    Wood ...................................  428 / 541
Impregnating  
    Abrasive tools .........................  51 / 295
    Apparatus ..............................  118
    Beer with carbonic acid ................  261
    Cigars and cigarettes ..................  131 / 362
    Compositions ...........................  106
    Conductors insulated ...................  174 / 120 R+
        Fluid for vacuum containing ........  174 / 25 R+
    Covering apparatus combined ............  57 / 7
    Covering process combined ..............  57 / 7
    Match splints ..........................  149 / 3+
    Packing with rubber ....................  277 / 442+
    Plants living ..........................  47 / 57.5
    Processes ..............................  427
        Ion plating or impregnation ........  427 / 523+
    Spinning or twisting apparatus .........  57 / 295
    Combined ...............................  57 / 295
        Paper or cellulose tape ............  57 / 32
    Textile process combined ...............  28 / 167+
        Covered strands ....................  57 / 217
        Twisted strands ....................  57 / 250
    Tobacco ................................  131 / 300+
    Twisting process combined ..............  57 / 295+
    Warp preparation combined ..............  28 / 178+
Impressed  
    Book ...................................  462 / 56
    Leaf ...................................  462 / 67
Impressing  
    Dental device ..........................  433 / 68+
        Mold ...............................  433 / 34+
    Leather ................................  69 / 2
    Tobacco labeling .......................  131 / 113
Improver  
    Bread or flour .........................  426 / 653
Impulse (See Electric Impulse  
    Generator)  
Incandescent (See Electrode;  
    Illumination; light)  
    Gaseous fuel burners ...................  431 / 100+
    Grates for gas burners .................  126 / 92 R
    Igniters for engines ...................  123 / 145 R+
    Incandescent lamp ......................  D26 / 2+
    Lamps ..................................  313 / 315+
        Design .............................  D26
        Heaters ............................  219 / 552+
        Making, glass working  
            Apparatus ......................  65 / 152+
            Methods ........................  65 / 36+
        With arc ...........................  313 / 8
    Mantle .................................  431 / 100+
    Mantle packages ........................  206 / 68
Incendiary  
    Ammunition and explosive devices .......  102 / 364+
        Compositions for ...................  149
    Hazardous or toxic waste ...............  588 / 403
    Destruction ............................  588 / 403
Incense ....................................  424 / 40
Incense Burners  
    Design .................................  D11 / 131.1
    Design, simulative forms ...............  D11 / 131.1
    Incineration of radioactive waste ......  976 / DIG 393
Incinerators ...............................  D34 / 1.1
    Cooking stove ..........................  126 / 222+
    Dry matter .............................  110 / 235+
    Garbage ................................  122 / 2
    Hazardous or toxic waste ...............  588 / 900
    Destruction ............................  588 / 900
    Wet matter .............................  110 / 238
Incline (See Hoists)  
    Elevator ...............................  187 / 245+
        Handling type ......................  414 / 595+
        Portable ...........................  187 / 240+
    Gravity way ............................  193
Inclinometer ...............................  33 / 365+
Incubators .................................  119 / 311+
    Automatic control ......................  236 / 2+
    Baby ...................................  600 / 22
    Bird ...................................  119 / 311+
    Controlled heating systems .............  237 / 3+
    Culture plates or container ............  435 / 809*
    Design .................................  D24 / 163
    Heating systems