U.S. federal trademark · Serial No. 76305062 · Reg. No. 2231231
OPTICAL SPECTRUM ANALYZERS AND SPECTRUM ANALYZERS FOR FIBER-OPTIC NETWORKS; WAVELENGTH-DIVISION OPTICAL MULTIPLEXERS AND DEMULTIPLEXERS; OPTICAL FILTERS, OPTICAL ATTENUATORS, OPTICAL SWITCHES, OPTICAL AMPLIFIERS, OPTICAL POWERMETERS, OPTICAL REFLECTOMETERS, POLARIMETER MODAL DISTORTION AND CHROMATIC DISPERSION ANALYZERS, SINGLE AND MULTI-WAVELENGTH LASER SOURCES
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