73050648
Apr 28, 1975
Oct 3, 1978
ELECTRICAL APPARATUS FOR REMOTE CONTROL OF LIGHTING, HEATING AND VENTILATION EXCLUDING ELECTRICAL APPARATUS FOR REMOTE CONTROL OF AIR CONDITIONERS AND FURNACES
Electrical and Scientific ApparatusLIGHTING, HEATING, AND VENTILATING SYSTEMS, COMPRISING PRINCIPALLY LIGHTING FIXTURES, STOVES, WATER HEATERS, WATER STORAGE TANKS AND REFRIGERATORS EXCLUDING AIR CONDITIONERS AND FURNACES
Environmental Control Apparatus