73065685
Oct 14, 1975
Sep 18, 1979
ELECTRICAL APPARATUS FOR REMOTE CONTROL OF LIGHTING, HEATING AND VENTILATION
Electrical and Scientific ApparatusLIGHTING, HEATING AND VENTILATING SYSTEMS, COMPRISING PRINCIPALLY LIGHTING FIXTURES, FURNACES, STOVES, WATER HEATERS, WATER STORAGE TANKS, REFRIGERATORS AND AIR CONDITIONERS
Environmental Control Apparatus