U.S. federal trademark · Serial No. 75003622
apparatus for heating, ventilating, air conditioning and air cleaning of all kinds particularly, gas, electric and oil-fired heating apparatus, central heating apparatus, regulating apparatus for use with such heating apparatus, ventilating apparatus and instruments, boilers and exhaust gas blowers, exhaust gas safety devices, air conditioning apparatus and instruments
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.