E nhancer - Class 800
EAR - Class 460
EAROM - Class 438
EARTH - Class 037
EARTH WORKING ELEMENT - Class 172
EARTHENWARE - Class 425
EARTHENWARE, PORCELAIN - Class 501
EB - Class 438
EB JUNCTION - Class 257
EBES - Class 438
EBIC - Class 438
EBL - Class 438
ECL - Class 438
ECR - Class 438
EDFFG - Class 117
EDIBLE - Class 099
EDP - Class 438
EDTA - Class 438
EELS - Class 438
EEPROM - Class 438
EFFLUENT - Class 210
EFG - Class 438
EG - Class 438
EGSi - Class 438
EJECTOR - Classes 221, 347, 425
EL - Class 438
ELECTRIC CARRIERS OF A TRANSISTOR - Class 330
ELECTRIC DISCHARGE - Class 330
ELECTRIC ENERGY GENERATORS - Class 322
ELECTRIC GENERATING - Class 322
ELECTRIC LAMP - Class 313
ELECTRIC MOTOR - Class 388
ELECTRIC MOTOR: - Class 318
ELECTRIC SIGNAL SOURCE OR SIGNAL SOURCE - Class 330
ELECTRIC SOURCE CIRCUIT - Class 363
ELECTRIC SPACE DISCHARGE DEVICES - Classes 313, 315
ELECTRICAL CIRCUIT - Class 330
ELECTRICAL COMPONENT (*): - Class 029
ELECTRICAL NETWORK OR NETWORK - Class 330
ELECTRICAL NOISE OR RANDOM WAVE GENERATOR - Class 331
ELECTRICAL SOURCE CIRCUIT - Class 323
ELECTRICAL SPACE DISCHARGE DEVICE - Class 363
ELECTRODE - Classes 313, 330, 373, 429
ELECTROLYSIS - Class 204
ELECTROLYTE - Classes 204, 429
ELECTROMAGNETIC OPERATOR - Class 334
ELECTROMAGNETIC WAVE POLARIZATION CONVERTER - Class 342
ELECTROMAGNETIC WAVE POLARIZATION FILTER - Class 343
ELECTROMAGNETIC WAVE REFRACTOR - Class 343
ELECTROMAGNETIC WAVES - Class 522
ELECTROMECHANICAL RESONATOR - Class 331
ELECTROMECHANICAL TRANSDUCER - Class 330
ELECTROMIGRATION - Class 438
ELECTRON - Class 257
ELECTRON BEAM - Class 373
ELECTRON FLOW - Class 257
ELECTRON-HOLE PAIR - Classes 257, 438
ELECTRONIC - Class 326
ELECTRONIC DEVICE - Class 326
ELECTRONIC PROGRAM GUIDE (EPG) - Class 725
ELECTRONIC TUBE - Classes 323, 330, 363
ELECTRO-OPTIC - Class 372
ELECTROPHORESIS - Class 356
ELECTROPOLISHING - Class 205
ELECTROSLAG DEVICE - Class 373
ELECTROSTATOGRAPHY - Class 399
ELEMENT - Classes 205, 338, 351, 428
ELO - Class 438
ELONGATED CONDUCTOR (*): - Class 029
EMBOSSING - Classes 065, 425
EMD - Class 438
EMI - Class 438
EMISSIVE CATHODE - Class 313
EMITTER - Class 257
EMITTER CURRENT - Class 257
EMITTER ELECTRODE - Class 330
E-MOSFET - Class 257
EMP - Class 438
EMULSIFYING AGENT - Class 516
EMULSION - Class 516
EMULSION BREAKER - Class 516
ENCAPSULATING - Class 588
ENCLOSURE - Class 052
ENCRYPTING OR ENCIPHERING - Class 380
ENCRYPTION - Class 725
END EFFECTOR - Class 901
END EFFECTOR: - Class 700
END FACE - Class 092
END SHEETS(*) - Class 412
ENDLESS - Class 425
ENERGY LEVELS - Class 257
ENGINE - Class 440
ENGINE: - Class 477
ENHANCEMENT MODE - Classes 257, 438
ENTERPRISE - Class 705
ENTITY - Classes 709, 718
eNTITY - Class 719
ENTRANCE - Class 052
ENVELOPE - Class 313
ENVIRONMENT - Classes 709, 718, 719
ENVIRONMENTALLY SAFE SUBSTANCE - Class 588
ENZYME - Class 977
EPB - Class 438
EPD - Class 438
EPI - Class 438
EPITAXIAL LATERAL OVERGROWTH - Class 438
EPITAXIAL LAYER - Class 257
EPITAXY - Classes 117, 257, 438
EPITOPE - Class 435
EPP - Class 438
EPR - Class 438
EPROM - Class 438
EPS - Class 438
EPW - Class 438
EQUALIZER - Classes 330, 333
ERROR - Classes 710, 712, 713, 714
ESAKI DIODE - Classes 257, 438
ESCA - Class 438
ESD - Class 438
ESR - Class 438
ESSENTIAL OIL - Class 516
ESTER - Class 428
ESTER LINKAGE - Class 428
ESTER-TYPE WAX - Class 204
ESTER-TYPE WAXES - Classes 507, 507
ETHER - Classes 514, 520
ETHYLENIC - Class 987
ETHYLENICALLY UNSATURATED - Class 520
EVAPORATION - Classes 201, 202, 203
EXCESS CARRIERS - Class 257
EXCITATION - Class 704
EXCITATION* - Class 349
Exon - Class 800
EXPANDER OR VOLUME EXPANDER - Class 330
EXPENDABLE- SHEATH- - Class 401
EXPLOSIVE - Class 102
EXPLOSIVE COMPOSITIONS - Class 149
EXPLOSIVE OR THERMIC COMPONENT - Class 149
EXPOSURE - Classes 396, 430
EXPOSURE CONTROL CIRCUIT - Class 396
EXPOSURE OBJECTIVE - Class 396
EXPOSURE SYSTEM - Class 396
EXPOSURE TIME - Class 396
EXPOSURE TIME VALUE (Tv) - Class 396
EXPOSURE VALUE (Ev) - Class 396
EXTRACTIVE DISTILLATION - Classes 202, 203
EXTRACTORS - Class 171
EXTRINSIC SEMICONDUCTOR - Classes 257, 438
EXTRUDANT - Classes 264, 425
EYE CONTACT LENSES - Class 351
EYEGLASSES - Class 351