73201049
Apr 27, 1979
Jul 15, 1980
TELECOMMUNICATIONS EQUIPMENT-NAMELY, MODEMS (DATA SETS), REPEATERS, LOOP-BACK MODULES, LEVEL CONTROL MODULES, TRANSFER RELAY MODULES, REPEAT COILS, RING-DOWN UNITS, SIGNALING CONVERTERS, SIGNALING UNITS AND TERMINATING SETS
Electrical and Scientific Apparatus