U.S. federal trademark · Serial No. 86615564 · Reg. No. 5032735
Ring-shaped packing materials used to pack oil and gas pumping equipment, comprised of one or more of the following, fabricated thermoplastic compounds, carbon-filled polytetrafluoroethylene (PTFE), hydrogenated nitrile rubber (HNBR), ultra-high molecular polyethylene (UHMWPE)
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.