AUDIO EQUIPMENTS, NAMELY, RADIO RECEIVERS, TUNERS, AMPLIFIERS, TAPE RECORDERS, HEAD-PHONES, SPEAKERS, MICROPHONES, RECORD PLAYERS, AUDIO MIXERS, STYLUS, RACKS FOR AUDIO EQUIPMENTS, GRAPHIC EQUALIZERS, AUDIO TIMERS, REMOTE CONTROLLERS FOR AUDIO EQUIPMENTS, REMOTE POWER SWITCHES, ANTENNAS, HEAD SHELLS, CASSETTE CASES, ACCESSORY CASES, STANDS FOR SPEAKERS, CORDS AND CABLES FOR AUDIO EQUIPMENT, DIGITAL AUDIO DISC PLAYERS AND THEIR DISCS, TAPES AND CASSETTE TAPES FOR TAPE RECORDERS; DIGITAL ENCODERS AND DECODERS, SOLID STATE MEMORY RECORDERS, VIDEO EQUIPMENTS, NAMELY, VIDEO TAPE RECORDERS, VIDEO DISC PLAYERS AND THEIR DISCS, TELEVISION RECEIVERS, TAPES AND CASSETTE TAPES FOR VIDEO TAPE RECORDERS, CAMERAS FOR VIDEO TAPE RECORDERS, DRYERS FOR PROTECTING TAPES FROM THE HUMIDITY, VIDEO TAPE WINDERS; MEASURING INSTRUMENTS, NAMELY, OSCILLOSCOPES, RESISTANCE ATTENUATORS, PATTERN GENERATORS, FREQUENCY COUNTERS, OSCILLATORS, RADIO-FREQUENCY SIGNAL GENERATORS, SWEEP GENERATORS, FUNCTION GENERATORS, VOLT METERS, WOW-FLUTTER METERS, ACOUSTIC MEASURING INSTRUMENTS, FREQUENCY CHECKERS, PROBE SELECTORS FOR OSCILLOSCOPES, POWER METERS, DIP METERS, MULTI METERS, REGULATED DIRECT-CURRENT POWER SUPPLIES, STEREO SIGNAL GENERATORS, AUDIO FREQUENCY GENERATORS, REMOTE CONTROLLERS FOR MEASURING INSTRUMENTS, PROBES FOR MEASURING INSTRUMENTS, TONE BURST GENERATORS, CARTRIDGE TEST UNITS, SPEAKER TEST GENERATORS, AUDIO SEQUENCERS, DIGITAL MEMORY-SCOPES, LOGIC ANALIZERS; COMMUNICATION EQUIPMENTS, NAMELY TRANSCEIVERS, COMMUNICATIONS RECEIVERS, VARIABLE FREQUENCY OSCILLATORS, ANTENNA TUNERS, FREQUENCY MOBILE CONTROLLERS, DIRECT-CURRENT POWER SUPPLIES, DIRECT CURRENT-DIRECT CURRENT CONVERTERS, POWER UP UNITS KITS FOR TRANSCEIVERS, OSCILLATOR UNITS FOR TRANSCEIVERS, FAN UNITS FOR TRANSCEIVERS, KNOBS FOR TRANSCEIVERS, MOBILE MOUNTS FOR TRANSCEIVERS, FREQUENCY MODULATION UNITS FOR TRANSCEIVERS, FILTERS FOR TRANSCEIVERS, VOICE CONTROL UNITS FOR TRANSCEIVERS, SYSTEM BASES FOR COMMUNICATION EQUIPMENTS, STATION CONSOLES FOR COMMUNICATION EQUIPMENTS, STANDS FOR TRANSCEIVERS, BATTERIES, BATTERY CHARGERS, CASES FOR TRANSCEIVERS, TONE UNITS FOR TRANSCEIVERS, VACUUM TUBES, POWER SUPPLY CORDS, CONNECTERS, RADIO-FREQUENCY DUMMY LOADS, RACKS FOR COMMUNICATION EQUIPMENTS; SATELLITE COMMUNICATIN EQUIPMENTS, NAMELY, RECEIVERS FOR SATELLITE COMMUNICATION, ANTENNA FOR SATELLITE COMMUNICATION, COMPUTERS, NAMELY, COMPUTERS, COMPUTER MEMORIES, RECORDED COMPUTER PROGRAMS, COMPUTER INTERFACE UNITS; TELEPHONE AND TELEGRAPH APPARATUS, NAMELY, TELEGRAPHS, TELEMETERS, TELEPHONE APPARATUS, TELEPHONE TRANSMITTERS, TELEGRAPHIC TRANSMITTERS, TELEPHONE RECEIVERS, TELEPRINTERS, TELETYPEWRITERS; ALARMS, NAMELY, ELECTRIC ALARM BELLS, ALARMS