| 2 | Apparel |
| 4 | Baths, closets, sinks, and spittoons |
| 5 | Beds |
| 7 | Compound tools |
| 8 | Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers |
| 12 | Boot and shoe making |
| 14 | Bridges |
| 15 | Brushing, scrubbing, and general cleaning |
| 16 | Miscellaneous hardware (e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.) |
| 19 | Textiles: fiber preparation |
| 23 | Chemistry: physical processes |
| 24 | Buckles, buttons, clasps, etc. |
| 26 | Textiles: cloth finishing |
| 27 | Undertaking |
| 28 | Textiles: manufacturing |
| 29 | Metal working |
| 30 | Cutlery |
| 33 | Geometrical instruments |
| 34 | Drying and gas or vapor contact with solids |
| 36 | Boots, shoes, and leggings |
| 37 | Excavating |
| 38 | Textiles: ironing or smoothing |
| 40 | Card, picture, or sign exhibiting |
| 42 | Firearms |
| 43 | Fishing, trapping, and vermin destroying |
| 44 | Fuel and related compositions |
| 47 | Plant husbandry |
| 48 | Gas: heating and illuminating |
| 49 | Movable or removable closures |
| 51 | Abrasive tool making process, material, or composition |
| 52 | Static structures (e.g., buildings) |
| 53 | Package making |
| 54 | Harness for working animal |
| 55 | Gas separation |
| 56 | Harvesters |
| 57 | Textiles: spinning, twisting, and twining |
| 59 | Chain, staple, and horseshoe making |
| 60 | Power plants |
| 62 | Refrigeration |
| 63 | Jewelry |
| 65 | Glass manufacturing |
| 66 | Textiles: knitting |
| 68 | Textiles: fluid treating apparatus |
| 69 | Leather manufactures |
| 70 | Locks |
| 71 | Chemistry: fertilizers |
| 72 | Metal deforming |
| 73 | Measuring and testing |
| 74 | Machine element or mechanism |
| 75 | Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures |
| 76 | Metal tools and implements, making |
| 79 | Button making |
| 81 | Tools |
| 82 | Turning |
| 83 | Cutting |
| 84 | Music |
| 86 | Ammunition and explosive-charge making |
| 87 | Textiles: braiding, netting, and lace making |
| 89 | Ordnance |
| 91 | Motors: expansible chamber type |
| 92 | Expansible chamber devices |
| 95 | Gas separation: processes |
| 96 | Gas separation: apparatus |
| 99 | Foods and beverages: apparatus |
| 100 | Presses |
| 101 | Printing |
| 102 | Ammunition and explosives |
| 104 | Railways |
| 105 | Railway rolling stock |
| 106 | Compositions: coating or plastic |
| 108 | Horizontally supported planar surfaces |
| 109 | Safes, bank protection, or a related device |
| 110 | Furnaces |
| 111 | Planting |
| 112 | Sewing |
| 114 | Ships |
| 116 | Signals and indicators |
| 117 | Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor |
| 118 | Coating apparatus |
| 119 | Animal husbandry |
| 122 | Liquid heaters and vaporizers |
| 123 | Internal-combustion engines |
| 124 | Mechanical guns and projectors |
| 125 | Stone working |
| 126 | Stoves and furnaces |
| 127 | Sugar, starch, and carbohydrates |
| 128 | Surgery |
| 131 | Tobacco |
| 132 | Toilet |
| 134 | Cleaning and liquid contact with solids |
| 135 | Tent, canopy, umbrella, or cane |
| 136 | Batteries: thermoelectric and photoelectric |
| 137 | Fluid handling |
| 138 | Pipes and tubular conduits |
| 139 | Textiles: weaving |
| 140 | Wireworking |
| 141 | Fluent material handling, with receiver or receiver coacting means |
| 142 | Wood turning |
| 144 | Woodworking |
| 147 | Coopering |
| 148 | Metal treatment |
| 149 | Explosive and thermic compositions or charges |
| 150 | Purses, wallets, and protective covers |
| 152 | Resilient tires and wheels |
| 156 | Adhesive bonding and miscellaneous chemical manufacture |
| 157 | Wheelwright machines |
| 159 | Concentrating evaporators |
| 160 | Flexible or portable closure, partition, or panel |
| 162 | Paper making and fiber liberation |
| 163 | Needle and pin making |
| 164 | Metal founding |
| 165 | Heat exchange |
| 166 | Wells |
| 168 | Farriery |
| 169 | Fire extinguishers |
| 171 | Unearthing plants or buried objects |
| 172 | Earth working |
| 173 | Tool driving or impacting |
| 174 | Electricity: conductors and insulators |
| 175 | Boring or penetrating the earth |
| 177 | Weighing scales |
| 178 | Telegraphy |
| 180 | Motor vehicles |
| 181 | Acoustics |
| 182 | Fire escape, ladder, or scaffold |
| 184 | Lubrication |
| 185 | Motors: spring, weight, or animal powered |
| 186 | Merchandising |
| 187 | Elevator, industrial lift truck, or stationary lift for vehicle |
| 188 | Brakes |
| 190 | Trunks and hand-carried luggage |
| 191 | Electricity: transmission to vehicles |
| 192 | 192 clutches and power-stop control |
| 193 | Conveyors, chutes, skids, guides, and ways |
| 194 | Check-actuated control mechanisms |
| 196 | Mineral oils: apparatus |
| 198 | Conveyors: power-driven |
| 199 | Type casting |
| 200 | Electricity: circuit makers and breakers |
| 201 | Distillation: processes, thermolytic |
| 202 | Distillation: apparatus |
| 203 | Distillation: processes, separatory |
| 204 | Chemistry: electrical and wave energy |
| 205 | Electrolysis: processes, compositions used therein, and methods of preparing the compositions |
| 206 | Special receptacle or package |
| 208 | Mineral oils: processes and products |
| 209 | Classifying, separating, and assorting solids |
| 210 | Liquid purification or separation |
| 211 | Supports: racks |
| 212 | Traversing hoists |
| 213 | Railway draft appliances |
| 215 | Bottles and jars |
| 216 | Etching a substrate: processes |
| 217 | Wooden receptacles |
| 218 | High-voltage switches with arc preventing or extinguishing devices |
| 219 | Electric heating |
| 220 | Receptacles |
| 221 | Article dispensing |
| 222 | Dispensing |
| 223 | Apparel apparatus |
| 224 | Package and article carriers |
| 225 | Severing by tearing or breaking |
| 226 | Advancing material of indeterminate length |
| 227 | Elongated-member-driving apparatus |
| 228 | Metal fusion bonding |
| 229 | Envelopes, wrappers, and paperboard boxes |
| 231 | Whips and whip apparatus |
| 232 | Deposit and collection receptacles |
| 234 | Selective cutting (e.g., punching) |
| 235 | Registers |
| 236 | Automatic temperature and humidity regulation |
| 237 | Heating systems |
| 238 | Railways: surface track |
| 239 | Fluid sprinkling, spraying, and diffusing |
| 241 | Solid material comminution or disintegration |
| 242 | Winding, tensioning, or guiding |
| 244 | Aeronautics and astronautics |
| 245 | Wire fabrics and structure |
| 246 | Railway switches and signals |
| 248 | Supports |
| 249 | Static molds |
| 250 | Radiant energy |
| 251 | Valves and valve actuation |
| 252 | Compositions |
| 254 | Implements or apparatus for applying pushing or pulling force |
| 256 | Fences |
| 257 | Active solid-state devices (e.g., transistors, solid-state diodes) |
| 258 | Railway mail delivery |
| 260 | Chemistry of carbon compounds |
| 261 | Gas and liquid contact apparatus |
| 264 | Plastic and nonmetallic article shaping or treating: processes |
| 266 | Metallurgical apparatus |
| 267 | Spring devices |
| 269 | Work holders |
| 270 | Sheet-material associating |
| 271 | Sheet feeding or delivering |
| 273 | Amusement devices: games |
| 276 | Typesetting |
| 277 | Seal for a joint or juncture |
| 278 | Land vehicles: animal draft appliances |
| 279 | Chucks or sockets |
| 280 | Land vehicles |
| 281 | Books, strips, and leaves |
| 283 | Printed matter |
| 285 | Pipe joints or couplings |
| 289 | Knots and knot tying |
| 290 | Prime-mover dynamo plants |
| 291 | Track sanders |
| 292 | Closure fasteners |
| 293 | Vehicle fenders |
| 294 | Handling: hand and hoist-line implements |
| 295 | Railway wheels and axles |
| 296 | Land vehicles: bodies and tops |
| 297 | Chairs and seats |
| 298 | Land vehicles: dumping |
| 299 | Mining or in situ disintegration of hard material |
| 300 | Brush, broom, and mop making |
| 301 | Land vehicles: wheels and axles |
| 303 | Fluid-pressure and analogous brake systems |
| 305 | Wheel substitutes for land vehicles |
| 307 | Electrical transmission or interconnection systems |
| 310 | Electrical generator or motor structure |
| 312 | Supports: cabinet structure |
| 313 | Electric lamp and discharge devices |
| 314 | Electric lamp and discharge devices: consumable electrodes |
| 315 | Electric lamp and discharge devices: systems |
| 318 | Electricity: motive power systems |
| 320 | Electricity: battery or capacitor charging or discharging |
| 322 | Electricity: single generator systems |
| 323 | Electricity: power supply or regulation systems |
| 324 | Electricity: measuring and testing |
| 326 | Electronic digital logic circuitry |
| 327 | Miscellaneous active electrical nonlinear devices, circuits, and systems |
| 329 | Demodulators |
| 330 | Amplifiers |
| 331 | Oscillators |
| 332 | Modulators |
| 333 | Wave transmission lines and networks |
| 334 | Tuners |
| 335 | Electricity: magnetically operated switches, magnets, and electromagnets |
| 336 | Inductor devices |
| 337 | Electricity: electrothermally or thermally actuated switches |
| 338 | Electrical resistors |
| 340 | Communications: electrical |
| 341 | Coded data generation or conversion |
| 342 | Communications: directive radio wave systems and devices (e.g., radar, radio navigation) |
| 343 | Communications: radio wave antennas |
| 345 | Computer graphics processing and selective visual display systems |
| 346 | Recorders |
| 347 | Incremental printing of symbolic information |
| 348 | Television |
| 349 | Liquid crystal cells, elements and systems |
| 351 | Optics: eye examining, vision testing and correcting |
| 352 | Optics: motion pictures |
| 353 | Optics: image projectors |
| 355 | Photocopying |
| 356 | Optics: measuring and testing |
| 358 | Facsimile and static presentation processing |
| 359 | Optical: systems and elements |
| 360 | Dynamic magnetic information storage or retrieval |
| 361 | Electricity: electrical systems and devices |
| 362 | Illumination |
| 363 | Electric power conversion systems |
| 365 | Static information storage and retrieval |
| 366 | Agitating |
| 367 | Communications, electrical: acoustic wave systems and devices |
| 368 | Horology: time measuring systems or devices |
| 369 | Dynamic information storage or retrieval |
| 370 | Multiplex communications |
| 372 | Coherent light generators |
| 373 | Industrial electric heating furnaces |
| 374 | Thermal measuring and testing |
| 375 | Pulse or digital communications |
| 376 | Induced nuclear reactions: processes, systems, and elements |
| 377 | Electrical pulse counters, pulse dividers, or shift registers: circuits and systems |
| 378 | X-ray or gamma ray systems or devices |
| 379 | Telephonic communications |
| 380 | Cryptography |
| 381 | Electrical audio signal processing systems and devices |
| 382 | Image analysis |
| 383 | Flexible bags |
| 384 | Bearings |
| 385 | Optical waveguides |
| 386 | Motion video signal processing for recording or reproducing |
| 388 | Electricity: motor control systems |
| 392 | Electric resistance heating devices |
| 396 | Photography |
| 398 | Optical communications |
| 399 | Electrophotography |
| 400 | Typewriting machines |
| 401 | Coating implements with material supply |
| 402 | Binder device releasably engaging aperture or notch of sheet |
| 403 | Joints and connections |
| 404 | Road structure, process, or apparatus |
| 405 | Hydraulic and earth engineering |
| 406 | Conveyors: fluid current |
| 407 | Cutters, for shaping |
| 408 | Cutting by use of rotating axially moving tool |
| 409 | Gear cutting, milling, or planing |
| 410 | Freight accommodation on freight carrier |
| 411 | Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener |
| 412 | Bookbinding: process and apparatus |
| 413 | Sheet metal container making |
| 414 | Material or article handling |
| 415 | Rotary kinetic fluid motors or pumps |
| 416 | Fluid reaction surfaces (i.e., impellers) |
| 417 | Pumps |
| 418 | Rotary expansible chamber devices |
| 419 | Powder metallurgy processes |
| 420 | Alloys or metallic compositions |
| 422 | Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing |
| 423 | Chemistry of inorganic compounds |
| 424 | Drug, bio-affecting and body treating compositions |
| 425 | Plastic article or earthenware shaping or treating: apparatus |
| 426 | Food or edible material: processes, compositions, and products |
| 427 | Coating processes |
| 428 | Stock material or miscellaneous articles |
| 429 | Chemistry: electrical current producing apparatus, product, and process |
| 430 | Radiation imagery chemistry: process, composition, or product thereof |
| 431 | Combustion |
| 432 | Heating |
| 433 | Dentistry |
| 434 | Education and demonstration |
| 435 | Chemistry: molecular biology and microbiology |
| 436 | Chemistry: analytical and immunological testing |
| 438 | Semiconductor device manufacturing: process |
| 439 | Electrical connectors |
| 440 | Marine propulsion |
| 441 | Buoys, rafts, and aquatic devices |
| 442 | Fabric (woven, knitted, or nonwoven textile or cloth, etc.) |
| 445 | Electric lamp or space discharge component or device manufacturing |
| 446 | Amusement devices: toys |
| 449 | Bee culture |
| 450 | Foundation garments |
| 451 | Abrading |
| 452 | Butchering |
| 453 | Coin handling |
| 454 | Ventilation |
| 455 | Telecommunications |
| 460 | Crop threshing or separating |
| 462 | Books, strips, and leaves for manifolding |
| 463 | Amusement devices: games |
| 464 | Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts |
| 470 | Threaded, headed fastener, or washer making: process and apparatus |
| 472 | Amusement devices |
| 473 | Games using tangible projectile |
| 474 | Endless belt power transmission systems or components |
| 475 | Planetary gear transmission systems or components |
| 476 | Friction gear transmission systems or components |
| 477 | Interrelated power delivery controls, including engine control |
| 482 | Exercise devices |
| 483 | Tool changing |
| 492 | Roll or roller |
| 493 | Manufacturing container or tube from paper; or other manufacturing from a sheet or web |
| 494 | Imperforate bowl: centrifugal separators |
| 501 | Compositions: ceramic |
| 502 | Catalyst, solid sorbent, or support therefor: product or process of making |
| 503 | Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor |
| 504 | Plant protecting and regulating compositions |
| 505 | Superconductor technology: apparatus, material, process |
| 506 | Combinatorial chemistry technology: method, library, apparatus |
| 507 | Earth boring, well treating, and oil field chemistry |
| 508 | Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions |
| 510 | Cleaning compositions for solid surfaces, auxiliary compositions therefor, or processes of preparing the compositions |
| 512 | Perfume compositions |
| 514 | Drug, bio-affecting and body treating compositions |
| 516 | Colloid systems and wetting agents; subcombinations thereof; processes of |
| 518 | Chemistry: fischer-tropsch processes; or purification or recovery of products thereof |
| 520 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 521 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 522 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 523 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 524 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 525 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 526 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 527 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 528 | Synthetic resins or natural rubbers -- part of the class 520 series |
| 530 | Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof |
| 532 | Organic compounds -- part of the class 532-570 series |
| 534 | Organic compounds -- part of the class 532-570 series |
| 536 | Organic compounds -- part of the class 532-570 series |
| 540 | Organic compounds -- part of the class 532-570 series |
| 544 | Organic compounds -- part of the class 532-570 series |
| 546 | Organic compounds -- part of the class 532-570 series |
| 548 | Organic compounds -- part of the class 532-570 series |
| 549 | Organic compounds -- part of the class 532-570 series |
| 552 | Organic compounds -- part of the class 532-570 series |
| 554 | Organic compounds -- part of the class 532-570 series |
| 556 | Organic compounds -- part of the class 532-570 series |
| 558 | Organic compounds -- part of the class 532-570 series |
| 560 | Organic compounds -- part of the class 532-570 series |
| 562 | Organic compounds -- part of the class 532-570 series |
| 564 | Organic compounds -- part of the class 532-570 series |
| 568 | Organic compounds -- part of the class 532-570 series |
| 570 | Organic compounds -- part of the class 532-570 series |
| 585 | Chemistry of hydrocarbon compounds |
| 588 | Hazardous or toxic waste destruction or containment |
| 600 | Surgery |
| 601 | Surgery: kinesitherapy |
| 602 | Surgery: splint, brace, or bandage |
| 604 | Surgery |
| 606 | Surgery |
| 607 | Surgery: light, thermal, and electrical application |
| 623 | Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor |
| 700 | Data processing: generic control systems or specific applications |
| 701 | Data processing: vehicles, navigation, and relative location |
| 702 | Data processing: measuring, calibrating, or testing |
| 703 | Data processing: structural design, modeling, simulation, and emulation |
| 704 | Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression |
| 705 | Data processing: financial, business practice, management, or cost/price determination |
| 706 | Data processing: artificial intelligence |
| 707 | Data processing: database and file management or data structures |
| 708 | Electrical computers: arithmetic processing and calculating |
| 709 | Electrical computers and digital processing systems: multicomputer data transferring |
| 710 | Electrical computers and digital data processing systems: input/output |
| 711 | Electrical computers and digital processing systems: memory |
| 712 | Electrical computers and digital processing systems: processing architectures and instruction processing (e.g., processors) |
| 713 | Electrical computers and digital processing systems: support |
| 714 | Error detection/correction and fault detection/recovery |
| 715 | Data processing: presentation processing of document, operator interface processing, and screen saver display processing |
| 716 | Computer-aided design and analysis of circuits and semiconductor masks |
| 717 | Data processing: software development, installation, and management |
| 718 | Electrical computers and digital processing systems: virtual machine task or process management or task management/control |
| 719 | Electrical computers and digital processing systems: interprogram communication or interprocess communication (ipc) |
| 720 | Dynamic optical information storage or retrieval |
| 725 | Interactive video distribution systems |
| 726 | Information security |
| 800 | Multicellular living organisms and unmodified parts thereof and related processes |
| 850 | Scanning-probe techniques or apparatus; applications of scanning-probe techniques, e.g., scanning probe microscopy [spm] |
| 901 | Robots |
| 902 | Electronic funds transfer |
| 903 | Hybrid electric vehicles (hevs) |
| 930 | Peptide or protein sequence |
| 968 | Horology |
| 976 | Nuclear technology |
| 977 | Nanotechnology |
| 984 | Musical instruments |
| 987 | Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system |
| D01 | Edible products |
| D02 | Apparel and haberdashery |
| D03 | Travel goods and personal belongings |
| D04 | Brushware |
| D05 | Textile or paper yard goods; sheet material |
| D06 | Furnishings |
| D07 | Equipment for preparing or serving food or drink not elsewhere specified |
| D08 | Tools and hardware |
| D09 | Packages and containers for goods |
| D10 | Measuring, testing, or signalling instruments |
| D11 | Jewelry, symbolic insignia, and ornaments |
| D12 | Transportation |
| D13 | Equipment for production, distribution, or transformation of energy |
| D14 | Recording, communication, or information retrieval equipment |
| D15 | Machines not elsewhere specified |
| D16 | Photography and optical equipment |
| D17 | Musical instruments |
| D18 | Printing and office machinery |
| D19 | Office supplies; artists and teachers materials |
| D20 | Sales and advertising equipment |
| D21 | Games, toys, and sports goods |
| D22 | Arms, pyrotechnics, hunting and fishing equipment |
| D23 | Environmental heating and cooling; fluid handling and sanitary equipment |
| D24 | Medical and laboratory equipment |
| D25 | Building units and construction elements |
| D26 | Lighting |
| D27 | Tobacco and smokers' supplies |
| D28 | Cosmetic products and toilet articles |
| D29 | Equipment for safety, protection, and rescue |
| D30 | Animal husbandry |
| D32 | Washing, cleaning, or drying machine |
| D34 | Material or article handling equipment |
| D99 | Miscellaneous |
| PLT | Plants |