U.S. federal trademark · Serial No. 73141193 · Reg. No. 319
Vitreous Silica Crucibles All Useful in the Manufacture of Optical Fibers
Vitreous Silica Powder All Useful in the Manufacture of Optical Fibers
Vitreous Silica Rods, Tubes, and Sheets All Useful in the Manufacture of Optical Fibers
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.