72313965
Dec 9, 1968
Dec 22, 1970
TELEPHONE PROTECTORS FOR PROTECTING TERMINAL EQUIPMENT FROM HIGH VOLTAGES INDUCED INTO A TELEPHONE CIRCUIT BY PROXIMITY TO A HIGH TENSION POWER TRANSMISSION LINE; TRANSFORMERS; COUPLING PROTECTORS FOR POWER LINE OVERHEAD INSULATED GROUND WIRES; CHOKES WHICH FORCE DISCHARGE FROM LIGHTNING ACROSS A PROTECTIVE GAP; AND DRAINAGE REACTORS
Housewares and Glass