U.S. federal trademark · Serial No. 74598924 · Reg. No. 1943866
steam heating apparatus comprising vacuum pumps, differential controllers, accumulator tanks, control valves, all for use in connection with or as component parts of steam heating systems for heating commercial, residential, industrial, institutional, governmental and office buildings
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.