PULSECOM

TRANSMISSION, RECEIVING, GENERATION AND REGENERATION EQUIPMENT, AND PARTS THEREFOR, FOR USE IN THE COMMUNICATION AND TELEMETERING FIELDS-NAMELY, ENCODERS, DECODERS, RECEIVERS, TRANSMITTERS, AND TRANSCEIVERS; AND FOR TESTING, ANALYZING MONITORING, ALARMING AND SENDING EQUIPMENT, AND PARTS THEREFOR, FOR USE IN THE COMMUNICATION AND TELEMETERING FIELDS-NAMELY, TIME DIVISION MUTIPLEXERS AND DEMULTIPLEXERS, KEYING TONE, GENERATORS AND ANNUNCIATOR CIRCUITS