ELECTRO-MATIC

ELECTRIC DEVICES FOR ACTUATION BY VEHICLE, PEDESTRIAN, OR OTHER OBJECTS, DETECTORS, AMPLIFIERS AND RELAY UNITS FOR USE THEREWITH, ELECTRIC ROAD TREADLE DEVICES, ELECTRIC TIMERS, CYCLIC TIME SWITCHES AND TIME CYCLE CONTROL APPARATUS, ELECTRICAL RELAYS AND RELAY SYSTEMS, ELECTRICAL CONTROLS FOR DOOR OPENING AND CLOSING, PUSH-BUTTON SWITCHES FOR PEDESTRIAN ACTUATION