U.S. federal trademark · Serial No. 74492399 · Reg. No. 1888153
optical powder for grinding and smoothing lenses, crystal finishing powder and aluminum oxide for lapping and grinding lenses, silicon carbide for lapping and cutting lenses, lens polishing powder, micro alumina and cerium oxide for polishing lenses and glass beads for lens polishing
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.