71485887
Jul 16, 1945
Oct 8, 1946
ELECTRICAL SUPERVISORY ALARM SIGNALLING APPARATUS, COMPRISING ASSEMBLIES OF PILOT LIGHTS, TERMINAL BLOCKS, RELAYS, SWITCHES, CIRCUIT BREAKERS, FLASHING DEVICES, GONGS, BELLS, HOWLERS, WIRING DEVICES, CONNECTORS, AND PARTS THEREOF
Housewares and Glass