73085405
Apr 28, 1976
Apr 11, 1978
ELECTRICAL CONTROL APPARATUS COMPRISING INTEGRATED CIRCUIT OR COMPUTER LOGIC NETWORKS OF RESISTORS, CAPACITORS, CONTACTS, RELAYS, DIODES AND GATES FOR USE IN SELECTIVELY ENERGIZING AND DEENERGIZING ELECTRICAL LOADS IN HEATING, VENTILATING AND AIR CONDITIONING SYSTEMS
Electrical and Scientific Apparatus