U.S. federal trademark · Serial No. 79441386
Components of glass, glass-ceramic and quartz glass in the form of rods, tubes, and plates; quartz glass preforms for optical fibers in optical applications; quartz glass raw materials and quartz glass semi-finished products for optical devices and instruments; quartz glass preforms for optical fibers for optical devices and instruments
Glass, glass-ceramic and quartz glass components specially adapted for use in optical devices and instruments
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