U.S. federal trademark · Serial No. 85491855 · Reg. No. 4330250
Rubber check valve sold as a primary component of air operated double-diaphragm pumps to permit the transfer of fluids containing abrasives or large solids, or fluids with high viscosity or coagulants
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.