U.S. federal trademark · Serial No. 50050961
Heating boilers featuring gas-air ratio control gas valves and integrated combustion control systems for optimizing combustion efficiency; Heating boilers; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Combustion furnaces; Combustion chambers; Water heaters; Hot water heating installations; Gas water heaters for household use; Electric water heating apparatus
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.