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LEARNING AIDS CONSISTING OF A KEYBOARD, MICROPROCESSOR, ROMS, AND VISUAL DISPLAY BOARD SOLD AS A UNIT; THERMALLY RESPONSIVE SWITCHES FOR PROTECTION OF ELECTRIC MOTORS; COMPUTERS; COMPUTER PROGRAMS DISCS; COMPUTER PERIPHERALS, NAMELY PRINTERS, DISC DRIVES, TAPES AND TAPE DRIVES, AND DISPLAY MONITORS; CALCULATORS; SEMICONDUCTOR DEVICES, NAMELY TRANSISTORS AND DIODES; INTEGRATED CIRCUITS, MICROPROCESSORS, AND MICROCOMPUTERS; PRINTED CIRCUIT BOARDS; SEISMIC EXPLORATION EQUIPMENT, NAMELY FIELD DATA COLLECTORS, DATA PROCESSORS, AND VIBRATOR CONTROLLERS; THERMOSTATS; ELECTRIC RELAYS; DATA TERMINALS, WITH AND WITHOUT PRINTING CAPABILITY; ELECTRONIC SENSORS; OSCILLOGRAPH RECORDERS; AND PROGRAMMABLE INDUSTRIAL CONTROLLERS