72461356
Jun 26, 1973
Dec 24, 1974
DEVICE USED IN CENTRAL OFFICES FOR INSURING THAT GROUND IS RETURNED AND HELD ON THE SLEEVE OF SXS SELECTORS, CONNECTORS AND REPEATERS WHEN THE SWITCH IS SEIZED
Electrical and Scientific ApparatusDEVICE USED IN CENTRAL OFFICES FOR INSURING THAT GROUND IS RETURNED AND HELD ON THE SLEEVE OF SXS SELECTORS, CONNECTORS AND REPEATERS WHEN THE SWITCH IS SEIZED
Housewares and Glass