U.S. federal trademark · Serial No. 76485876 · Reg. No. 30240442
products of quartz glass for use in telecommunication engineering, namely optical fibers and preforms for producing optical fibers
semifinished quartz glass tubes, rods, plates and blocks for the manufacture of optical fibers, namely, dielectric rods, jacketing tubes, sleeving tubes, overcladding tubes, substrate tubes, handles and dummy rods
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.