73201645
Jan 29, 1979
Apr 1, 1980
AIR CONDITIONERS FOR CONDITIONING AIR OR OTHER GASES BY HEATING, COOLING, HUMIDIFYING, DEHUMIDIFYING, HEAT OR MOISTURE EXCHANGE, AND HEAT RECOVERY FROM AIR AND OTHER GASES; ROTATING AND STATIONARY HEAT EXCHANGERS, HEAT PUMPS FOR AIR CONDITIONERS; FANS, BLOWERS, VENTILATORS
Environmental Control Apparatus