75734230
Jun 16, 1999
Jul 27, 2004
Electronic speed controls for fans, automatic level-controlling valves for water heater tanks
Electrical and Scientific ApparatusAir conditioning units and parts therefore, namely, fans, sound dampers, intake screens, back draft dampers, fire valves and shutter valves, supply/exhaust connections, air seals and ventilation ducts, electric fans for personal use, commercial ventilation fans, oven ventilation hoods, air duct heaters, and mechanically operated level-controlling valves for water heater tanks; and thermostatic valves for air conditioning/heating units
Environmental Control Apparatus