Source:
Downloaded from http://www.uspto.com  
OR  http://patents.cnidr.org/pto/classes.html  
Each class consists of subclasses, and each subclass has a text decription
of the subclass definition. 
--------------------------------------------------------------------------
The download:

       U.S. PATENT CLASSICATIONS:
       WARNING:   Classifications change!
                  We [cnidor.org] attempt to update this material as
                  soon as we receive changes from USPTO.         
       
       Class PLT - PLANTS
       Class 2 - APPAREL
       Class 4 - BATHS, CLOSETS, SINKS, AND SPITTOONS
       Class 5 - BEDS
       Class 7 - COMPOUND TOOLS
       Class 8 - BLEACHING AND DYEING;  FLUID TREATMENT AND CHEMICAL
           MODIFICATION OF TEXTILES AND FIBERS
       Class 12 - BOOT AND SHOE MAKING
       Class 14 - BRIDGES
       Class 15 - BRUSHING, SCRUBBING, AND GENERAL CLEANING
       Class 16 - MISCELLANEOUS HARDWARE
       Class 19 - TEXTILES:  FIBER PREPARATION
       Class 23 - CHEMISTRY:  PHYSICAL PROCESSES
       Class 24 - BUCKLES, BUTTONS, CLASPS, ETC.
       Class 26 - TEXTILES:  CLOTH FINISHING
       Class 27 - UNDERTAKING
       Class 28 - TEXTILES:  MANUFACTURING
       Class 29 - METAL WORKING
       Class 30 - CUTLERY
       Class 33 - GEOMETRICAL INSTRUMENTS
       Class 34 - DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS
       Class 36 - BOOTS, SHOES, AND LEGGINGS
       Class 37 - EXCAVATING
       Class 38 - TEXTILES:  IRONING OR SMOOTHING
       Class 40 - CARD, PICTURE, OR SIGN EXHIBITING
       Class 42 - FIREARMS
       Class 43 - FISHING, TRAPPING, AND VERMIN DESTROYING
       Class 44 - FUEL AND RELATED COMPOSITIONS
       Class 47 - PLANT HUSBANDRY
       Class 48 - GAS:  HEATING AND ILLUMINATING
       Class 49 - MOVABLE OR REMOVABLE CLOSURES
       Class 51 - ABRADING
       Class 52 - STATIC STRUCTURES (E.G., BUILDINGS)
       Class 53 - PACKAGE MAKING
       Class 54 - HARNESS
       Class 55 - GAS SEPARATION
       Class 56 - HARVESTERS
       Class 57 - TEXTILES:  SPINNING, TWISTING, AND TWINING
       Class 59 - CHAIN, STAPLE, AND HORSESHOE MAKING
       Class 60 - POWER PLANTS
       Class 62 - REFRIGERATION
       Class 63 - JEWELRY
       Class 65 - GLASS MANUFACTURING
       Class 66 - TEXTILES:  KNITTING
       Class 68 - TEXTILES:  FLUID TREATING APPARATUS
       Class 69 - LEATHER MANUFACTURES
       Class 70 - LOCKS
       Class 71 - CHEMISTRY:  FERTILIZERS
       Class 72 - METAL DEFORMING
       Class 73 - MEASURING AND TESTING
       Class 74 - MACHINE ELEMENT OR MECHANISM
       Class 75 - SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE
           THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL
           PARTICULATE MIXTURES
       Class 76 - METAL TOOLS AND IMPLEMENTS, MAKING
       Class 79 - BUTTON MAKING
       Class 81 - TOOLS
       Class 82 - TURNING
       Class 83 - CUTTING
       Class 84 - MUSIC
       Class 86 - AMMUNITION AND EXPLOSIVE CHARGE MAKING
       Class 87 - TEXTILES:  BRAIDING, NETTING, AND LACE MAKING
       Class 89 - ORDNANCE
       Class 91 - MOTORS:  EXPANSIBLE CHAMBER TYPE
       Class 92 - EXPANSIBLE CHAMBER DEVICES
       Class 95 - GAS SEPARATION:  PROCESSES
       Class 96 - GAS SEPARATION:  APPARATUS
       Class 99 - FOODS AND BEVERAGES:  APPARATUS
       Class 100 - PRESSES
       Class 101 - PRINTING
       Class 102 - AMMUNITION AND EXPLOSIVES
       Class 104 - RAILWAYS
       Class 105 - RAILWAY ROLLING STOCK
       Class 106 - COMPOSITIONS:  COATING OR PLASTIC
       Class 108 - HORIZONTALLY SUPPORTED PLANAR SURFACES
       Class 109 - SAFES, BANK PROTECTION, OR A RELATED DEVICE
       Class 110 - FURNACES
       Class 111 - PLANTING
       Class 112 - SEWING
       Class 114 - SHIPS
       Class 116 - SIGNALS AND INDICATORS
       Class 117 - SINGLE-CRYSTAL, ORIENTED-CRYSTAL, AND EPITAXY GROWTH
           PROCESSES; NON-COATING APPARATUS THEREFOR
       Class 118 - COATING APPARATUS
       Class 119 - ANIMAL HUSBANDRY
       Class 122 - LIQUID HEATERS AND VAPORIZERS
       Class 123 - INTERNAL-COMBUSTION ENGINES
       Class 124 - MECHANICAL GUNS AND PROJECTORS
       Class 125 - STONE WORKING
       Class 126 - STOVES AND FURNACES
       Class 127 - SUGAR, STARCH, AND CARBOHYDRATES
       Class 128 - SURGERY.    see class 600
       Class 131 - TOBACCO
       Class 132 - TOILET
       Class 134 - CLEANING AND LIQUID CONTACT WITH SOLIDS
       Class 135 - TENT, CANOPY, UMBRELLA, OR CANE
       Class 136 - BATTERIES:  THERMOELECTRIC AND PHOTOELECTRIC
       Class 137 - FLUID HANDLING
       Class 138 - PIPES AND TUBULAR CONDUITS
       Class 139 - TEXTILES:  WEAVING
       Class 140 - WIREWORKING
       Class 141 - FLUENT MATERIAL HANDLING, WITH RECEIVER OR RECEIVER COACTING
           MEANS
       Class 142 - WOOD TURNING
       Class 144 - WOODWORKING
       Class 147 - COOPERING
       Class 148 - METAL TREATMENT
       Class 149 - EXPLOSIVE AND THERMIC COMPOSITIONS OR CHARGES
       Class 150 - PURSES, WALLETS, AND PROTECTIVE COVERS
       Class 152 - RESILIENT TIRES AND WHEELS
       Class 156 - ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE
       Class 157 - WHEELWRIGHT MACHINES
       Class 159 - CONCENTRATING EVAPORATORS
       Class 160 - FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL
       Class 162 - PAPER MAKING AND FIBER LIBERATION
       Class 163 - NEEDLE AND PIN MAKING
       Class 164 - METAL FOUNDING
       Class 165 - HEAT EXCHANGE
       Class 166 - WELLS
       Class 168 - FARRIERY
       Class 169 - FIRE EXTINGUISHERS
       Class 171 - UNEARTHING PLANTS OR BURIED OBJECTS
       Class 172 - EARTH WORKING
       Class 173 - TOOL DRIVING OR IMPACTING
       Class 174 - ELECTRICITY:  CONDUCTORS AND INSULATORS
       Class 175 - BORING OR PENETRATING THE EARTH
       Class 177 - WEIGHING SCALES
       Class 178 - TELEGRAPHY
       Class 180 - MOTOR VEHICLES
       Class 181 - ACOUSTICS
       Class 182 - FIRE ESCAPE, LADDER, OR SCAFFOLD
       Class 184 - LUBRICATION
       Class 185 - MOTORS:  SPRING, WEIGHT, OR ANIMAL POWERED
       Class 186 - MERCHANDISING
       Class 187 - ELEVATORS
       Class 188 - BRAKES
       Class 190 - TRUCKS AND HAND CARRIED LUGGAGE
       Class 191 - ELECTRICITY:  TRANSMISSION TO VEHICLES
       Class 192 - CLUTCHES AND POWER-STOP CONTROL
       Class 193 - CONVEYORS, CHUTES, SKIDS, GUIDES, AND WAYS
       Class 194 - CHECK-ACTUATED CONTROL MECHANISMS
       Class 196 - MINERAL OILS:  APPARATUS
       Class 198 - CONVEYORS:  POWER-DRIVEN
       Class 199 - TYPE CASTING
       Class 200 - ELECTRICITY:  CIRCUIT MAKERS AND BREAKERS
       Class 201 - DISTILLATION:  PROCESSES, THERMOLYTIC
       Class 202 - DISTILLATION:  APPARATUS
       Class 203 - DISTILLATION:  PROCESSES, SEPARATORY
       Class 204 - CHEMISTRY:  ELECTRICAL AND WAVE ENERGY
       Class 205 - ELECTROLYSIS:  PROCESSES, COMPOSITIONS USED THEREIN, AND
           METHODS OF PREPARING THE COMPOSITIONS
       Class 206 - SPECIAL RECEPTACLE OR PACKAGE
       Class 208 - MINERAL OILS:  PROCESSES AND PRODUCTS
       Class 209 - CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS
       Class 210 - LIQUID PURIFICATION OR SEPARATION
       Class 211 - SUPPORTS:  RACKS
       Class 212 - TRAVERSING HOISTS
       Class 213 - RAILWAY DRAFT APPLIANCES
       Class 215 - BOTTLES AND JARS
       Class 217 - WOODEN RECEPTACLES
       Class 219 - ELECTRIC HEATING
       Class 220 - RECEPTACLES
       Class 221 - ARTICLE DISPENSING
       Class 222 - DISPENSING
       Class 223 - APPAREL APPARATUS
       Class 224 - PACKAGE AND ARTICLE CARRIERS
       Class 225 - SEVERING BY TEARING OR BREAKING
       Class 226 - ADVANCING MATERIAL OF  INDETERMINATE LENGTH
       Class 227 - ELONGATED-MEMBER-DRIVING APPARATUS
       Class 228 - METAL FUSION BONDING
       Class 229 - ENVELOPES, WRAPPERS, AND PAPERBOARD BOXES
       Class 231 - WHIPS AND WHIP APPARATUS
       Class 232 - DEPOSIT AND COLLECTION RECEPTACLES
       Class 234 - SELECTIVE CUTTING (e.g., PUNCHING)
       Class 235 - REGISTERS
       Class 236 - AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION
       Class 237 - HEATING SYSTEMS
       Class 238 - RAILWAYS:  SURFACE TRACK
       Class 239 - FLUID SPRINKLING, SPRAYING, AND DIFFUSING
       Class 241 - SOLID MATERIAL COMMINUTION OR DISINTEGRATION
       Class 242 - WINDING, TENSIONING, OR GUIDING
       Class 244 - AERONAUTICS
       Class 245 - WIRE FABRICS AND STRUCTURE
       Class 246 - RAILWAY SWITCHES AND SIGNALS
       Class 248 - SUPPORTS
       Class 249 - STATIC  MOLDS
       Class 250 - RADIANT ENERGY
       Class 251 - VALVES AND VALVE ACTUATION
       Class 252 - COMPOSITIONS
       Class 254 - IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING
           FORCE
       Class 256 - FENCES
       Class 257 - ACTIVE SOLID-STATE DEVICES (E.G.,TRANSISTORS, SOLID-STATE
           DIODES)
       Class 258 - RAILWAY MAIL DELIVERY
       Class 260 - CHEMISTRY OF CARBON COMPOUNDS
       Class 261 - GAS AND LIQUID CONTACT APPARATUS
       Class 264 - PLASTIC AND NONMETALLIC ARTICLE  SHAPING OR TREATING:
           PROCESSES
       Class 266 - METALLURGICAL APPARATUS
       Class 267 - SPRING DEVICES
       Class 269 - WORK HOLDERS
       Class 270 - SHEET-MATERIAL ASSOCIATING
       Class 271 - SHEET FEEDING OR DELIVERING
       Class 273 - AMUSEMENT DEVICES:  GAMES
       Class 276 - TYPESETTING
       Class 277 - JOINT PACKING
       Class 278 - LAND VEHICLES:  ANIMAL DRAFT APPLIANCES
       Class 279 - CHUCKS OR SOCKETS
       Class 280 - LAND VEHICLES
       Class 281 - BOOKS, STRIPS, AND LEAVES
       Class 283 - PRINTED MATTER
       Class 285 - PIPE JOINTS OR COUPLINGS
       Class 289 - KNOTS AND KNOT TYING
       Class 290 - PRIME-MOVER DYNAMO PLANTS
       Class 291 - TRACK SANDERS
       Class 292 - CLOSURE FASTENERS
       Class 293 - VEHICLE FENDERS
       Class 294 - HANDLING:  HAND AND HOIST-LINE IMPLEMENTS
       Class 295 - RAILWAY WHEELS AND AXLES
       Class 296 - LAND VEHICLES:  BODIES AND TOPS
       Class 297 - CHAIRS AND SEATS
       Class 298 - LAND VEHICLES:  DUMPING
       Class 299 - MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL
       Class 300 - BRUSH, BROOM, AND MOP MAKING
       Class 301 - LAND VEHICLES:  WHEELS AND AXLES
       Class 303 - FLUID-PRESSURE BRAKE AND ANALOGOUS SYSTEMS
       Class 305 - WHEEL SUBSTITUTES FOR LAND VEHICLES
       Class 307 - ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS
       Class 310 - ELECTRICAL GENERATOR OR MOTOR STRUCTURE
       Class 312 - SUPPORTS:  CABINET STRUCTURE
       Class 313 - ELECTRIC LAMP AND DISCHARGE DEVICES
       Class 314 - ELECTRIC LAMP AND DISCHARGE DEVICES:  CONSUMABLE ELECTRODES
       Class 315 - ELECTRIC LAMP AND DISCHARGE DEVICES:  SYSTEMS
       Class 318 - ELECTRICITY:  MOTIVE POWER SYSTEMS
       Class 320 - ELECTRICITY:  BATTERY AND CONDENSER CHARGING AND DISCHARGING
       Class 322 - ELECTRICITY:  SINGLE GENERATOR    SYSTEMS
       Class 323 - ELECTRICITY:  POWER SUPPLY OR REGULATION SYSTEMS
       Class 324 - ELECTRICITY:  MEASURING AND TESTING
       Class 328 - MISCELLANEOUS ELECTRON SPACE DISCHARGE DEVICE SYSTEMS
       Class 329 - DEMODULATORS
       Class 330 - AMPLIFIERS
       Class 331 - OSCILLATORS
       Class 332 - MODULATORS
       Class 333 - WAVE TRANSMISSION LINES AND NETWORKS
       Class 334 - TUNERS
       Class 335 - ELECTRICITY:  MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND
           ELECTROMAGNETS
       Class 336 - INDUCTOR DEVICES
       Class 337 - ELECTRICITY:  ELECTROTHERMALLY OR THERMALLY ACTUATED 
           SWITCHES
       Class 338 - ELECTRICAL RESISTORS
       Class 340 - COMMUNICATIONS:  ELECTRICAL
       Class 341 - CODED DATA GENERATION OR CONVERSION
       Class 342 - COMMUNICATIONS:  DIRECTIVE  RADIO WAVE SYSTEMS AND DEVICES
           (E.G., RADAR, RADIO NAVIGATION)
       Class 343 - COMMUNICATIONS:  RADIO WAVE ANTENNAS
       Class 345 - SELECTIVE VISUAL DISPLAY SYSTEMS
       Class 346 - RECORDERS
       Class 347 - INCREMENTAL PRINTING OF SYMBOLIC INFORMATION
       Class 348 - TELEVISION
       Class 351 - OPTICS:  EYE EXAMINING, VISION TESTING AND CORRECTING
       Class 352 - OPTICS:  MOTION PICTURES
       Class 353 - OPTICS:  IMAGE PROJECTORS
       Class 354 - PHOTOGRAPHY
       Class 355 - PHOTOCOPYING
       Class 356 - OPTICS:  MEASURING AND TESTING
       Class 358 - FACSIMILE OR TELEVISION RECORDING
       Class 359 - OPTICS:  SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS
       Class 360 - DYNAMIC MAGNETIC INFORMA- TION STORAGE OR RETRIEVAL
       Class 361 - ELECTRICITY:  ELECTRICAL SYSTEMS AND DEVICES
       Class 362 - ILLUMINATION
       Class 363 - ELECTRIC POWER CONVERSION SYSTEMS
       Class 364 - ELECTRICAL COMPUTERS AND DATA PROCESSING SYSTEMS
       Class 365 - STATIC INFORMATION STORAGE AND RETRIEVAL
       Class 366 - AGITATING
       Class 367 - COMMUNICATIONS, ELECTRICAL:  ACOUSTIC WAVE SYSTEMS AND
           DEVICES
       Class 368 - HOROLOGY:  TIME MEASURING SYSTEMS OR DEVICES
       Class 369 - DYNAMIC INFORMATION STORAGE OR RETRIEVAL
       Class 370 - MULTIPLEX COMMUNICATIONS
       Class 371 - ERROR DETECTION/CORRECTION AND FAULT DETECTION/RECOVERY
       Class 372 - COHERENT LIGHT GENERATORS
       Class 373 - INDUSTRIAL ELECTRIC HEATING FURNACES
       Class 374 - THERMAL MEASURING AND TESTING
       Class 375 - PULSE OR DIGITAL COMMUNICATIONS
       Class 376 - INDUCED NUCLEAR REACTIONS:  PROCESSES, SYSTEMS, AND ELEMENTS
       Class 377 - ELECTICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT
           REGISTERS:  CIRCUITS AND SYSTEMS
       Class 378 - X-RAY OR GAMMA RAY SYSTEMS OR DEVICES
       Class 379 - TELEPHONIC COMMUNICATIONS
       Class 380 - CRYPTOGRAPHY
       Class 381 - ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES
       Class 382 - IMAGE ANALYSIS
       Class 383 - FLEXIBLE BAGS
       Class 384 - BEARINGS
       Class 385 - OPTICAL WAVEGUIDES
       Class 388 - ELECTRICITY:  MOTOR CONTROL SYSTEMS
       Class 392 - ELECTRIC RESISTANCE HEATING DEVICES
       Class 395 - INFORMATION PROCESSING SYSTEM ORGANIZATION
       Class 400 - TYPEWRITING MACHINES
       Class 401 - COATING IMPLEMENTS WITH MATERIAL  SUPPLY
       Class 402 - BINDER DEVICE RELEASABLY ENGAGING APERTURE OR NOTCH OF SHEET
       Class 403 - JOINTS AND CONNECTIONS
       Class 404 - ROAD STRUCTURE, PROCESS, OR APPARATUS
       Class 405 - HYDRAULIC AND EARTH ENGINEERING
       Class 406 - CONVEYORS:  FLUID CURRENT
       Class 407 - CUTTERS, FOR SHAPING
       Class 408 - CUTTING BY USE OF ROTATING AXIALLY MOVING TOOL
       Class 409 - GEAR CUTTING, MILLING, OR PLANING
       Class 410 - FREIGHT ACCOMMODATION ON FREIGHT CARRIER
       Class 411 - EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR
           LOCKED-THREADED FASTENERS
       Class 412 - BOOKBINDING:  PROCESS  AND APPARATUS
       Class 413 - SHEET METAL CONTAINER MAKING
       Class 414 - MATERIAL OR ARTICLE HANDLING
       Class 415 - ROTARY KINETIC FLUID MOTORS OR PUMPS
       Class 416 - FLUID REACTION SURFACES (I.E., IMPELLERS)
       Class 417 - PUMPS
       Class 418 - ROTARY EXPANSIBLE CHAMBER DEVICES
       Class 419 - POWDER METALLURGY PROCESSES
       Class 420 - ALLOYS OR METALLIC COMPOSITIONS
       Class 422 - CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING,
           PRESERVING, OR STERILIZING
       Class 423 - CHEMISTRY OF INORGANIC COMPOUNDS
       Class 424 - DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS
       Class 425 - PLASTIC ARTICLE OR EARTHEN- WARE SHAPING OR TREATING:
           APPARATUS
       Class 426 - FOOD OR EDIBLE MATERIAL:  PROCESSES, COMPOSITIONS, AND
           PRODUCTS
       Class 427 - COATING PROCESSES
       Class 428 - STOCK MATERIAL OR MISCELLANEOUS ARTICLES
       Class 429 - CHEMISTRY:  ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT,
           AND PROCESS
       Class 430 - RADIATION  IMAGERY  CHEMISTRY:  PROCESS, COMPOSITION, OR
           PRODUCT THEREOF
       Class 431 - COMBUSTION
       Class 432 - HEATING
       Class 433 - DENTISTRY
       Class 434 - EDUCATION AND DEMONSTRATION
       Class 435 - CHEMISTRY:  MOLECULAR BIOLOGY AND MICROBIOLOGY
       Class 436 - CHEMISTRY:  ANALYTICAL AND IMMUNOLOGICAL TESTING
       Class 437 - SEMICONDUCTOR DEVICE MANUFACTURING:  PROCESS
       Class 439 - ELECTRICAL CONNECTORS
       Class 440 - MARINE PROPULSION
       Class 441 - BUOYS, RAFTS, AND AQUATIC DEVICES
       Class 445 - ELECTRIC LAMP OR SPACE DISCHARGE COMPONENT OR DEVICE
           MANUFACTURING
       Class 446 - AMUSEMENT DEVICES:  TOYS
       Class 449 - BEE CULTURE
       Class 450 - FOUNDATION GARMENTS
       Class 452 - BUTCHERING
       Class 453 - COIN HANDLING
       Class 454 - VENTILATION
       Class 455 - TELECOMMUNICATIONS
       Class 460 - CROP THRESHING OR SEPARATING
       Class 462 - BOOKS, STRIPS, AND LEAVES FOR MANIFOLDING
       Class 464 - ROTARY SHAFTS, GUDGEONS, HOUSINGS, AND FLEXIBLE COUPLINGS
           FOR ROTARY SHAFTS
       Class 470 - HEADED FASTENER, OR WASHER MAKING:  PROCESS AND APPARATUS
       Class 472 - AMUSEMENT DEVICES
       Class 473 - AMUSEMENT DEVICES:  GAMES
       Class 474 - ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS
       Class 475 - PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS
       Class 476 - FRICTION GEAR TRANSMISSION SYSTEMS OR COMPONENTS
       Class 477 - INTERRELATED POWER DELIVERY CONTROLS, INCLUDING ENGINE
           CONTROL
       Class 482 - EXERCISE DEVICES
       Class 483 - TOOL CHANGING
       Class 492 - ROLL OR ROLLER
       Class 493 - MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER
           MANUFACTURING FROM A SHEET OR WEB
       Class 494 - IMPERFORATE BOWL:  CENTRIFUGAL SEPARATORS
       Class 501 - COMPOSITIONS:  CERAMIC
       Class 502 - CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR:  PRODUCT OR
           PROCESS OF MAKING
       Class 503 - RECORD RECEIVER HAVING PLURAL INTERACTIVE LEAVES OR A COLOR
           FORMER, METHOD OF USE, OR DEVELOPER THEREFOR
       Class 504 - PLANT PROTECTING AND REGULATING COMPOSITIONS
       Class 505 - SUPERCONDUCTOR TECHNOLOGY:  APPARATUS, MATERIAL, PROCESS
       Class 507 - COMPOSITIONS OR METHODS OF PREPARATION OR MERE METHODS OF
           USING SAID COMPOSITIONS OR A COMPOUND:  FOR EARTH BORING OR FOR
           PREVENTING CONTAMINANT DEPOSITS IN PETROLEUM OIL CONDUITS
       Class 512 - PERFUME COMPOSITIONS
       Class 514 - DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS
       Class 518 - CHEMISTRY:  FISCHER-TROPSCH PROCESSES; OR PURIFICATION OR
           RECOVERY OF PRODUCTS THERE OF
       Class 520 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE 520 
           SERIES
       Class 521 - SYNTHETIC RESINS
       Class 522 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 523 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 524 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 525 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 526 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 527 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 528 - SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520
           SERIES
       Class 530 - CHEMISTRY:  NATURAL RESINS OR DERIVATIVES; PEPTIDES OR
           PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF
       Class 532 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 534 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 536 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 540 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 544 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 546 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 548 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 549 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 552 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 554 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 556 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 558 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 560 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 562 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 564 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 568 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 570 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532 - 570 SERIES
       Class 585 - CHEMISTRY OF HYDROCARBON COMPOUNDS
       Class 588 - HAZARDOUS OR TOXIC WASTE DESTRUCTION OR CONTAINMENT
       Class 600 - SURGERY   see class 128
       Class 601 - SURGERY:  KINESITHERAPY
       Class 602 - SURGERY:  SPLINT, BRACE, OR BANDAGE
       Class 604 - SURGERY
       Class 606 - SURGERY
       Class 607 - SURGERY:  LIGHT, THERMAL, AND ELECTRICAL APPLICATION
       Class 623 - PROSTHESIS (I.E., ARTIFICIAL BODY MEMBERS), PARTS THEREOF,
           OR AIDS AND ACCESSORIES THEREFOR
       Class 800 - MULTICELLULAR LIVING ORGANISMS AND UNMODIFIED PARTS THEREOF
       Class 901 - ROBOTS
       Class 902 - ELECTRONIC FUNDS TRANSFER
       Class 930 - PEPTIDE OR PROTEIN SEQUENCE
       Class 935 - GENETIC ENGINEERING:  RECOMBINANT DNA TECHNOLOGY, HYBRID OR
           FUSED CELL TECHNOLOGY, AND RELATED MANIPULATIONS OF NUCLEIC ACIDS
       Class 987 - ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR
           CONTAINING A METAL ATOM OF THE TO 8TH GROUP OF THE PERIODIC SYSTEM
       
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