U.S. federal trademark · Serial No. 79052851 · Reg. No. 4133589
non-metal sealing rings of filled polytetrafluoroethylene for use in valves, tanks and pipe connections and pipe couplings
Metal valves not being parts of machines and parts and fittings therefor
Metal valves being parts of machines and parts and fittings therefor
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.