U.S. federal trademark · Serial No. 73413777 · Reg. No. 1309870
Combination Heating and Cooling System Using the Constant Temperatures of the Earth to Create Air Insulating Atmosphere Around a Structura Comprising Primarily a Blower, Heat Exchangers and Piping
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.