U.S. federal trademark · Serial No. 73111517 · Reg. No. 959
(( QUARTZ GLASS, ESPECIALLY FLUORINE-DOPED QUARTZ GLASS; SEMI-FINISHED QUARTZ GLASS AND FLUORINE-DOPED QUARTZ GLASS PRODUCTS, SUCH AS TUBES, RODS, PLATES OR BLOCKS, FOR LABORATORY, OPTICAL AND INDUSTRIAL USE; FIBERS FOR OPTICAL WAVE-GUIDES; )) PERFORMS FOR THE FIBER PRODUCTION FOR OPTICAL WAVE GUIDES
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