U.S. federal trademark · Serial No. 76232571 · Reg. No. 2925570
OPTICAL COMMUNICATION NETWORKS AND OPTICAL NETWORK ELEMENTS NAMELY OPTICAL WAVEGUIDES, OPTICAL NODES, OPTICAL ADD-DROP MULTIPLEXERS, OPTICAL TRANSMITTERS, OPTICAL TRANSPONDERS, OPTICAL RECEIVERS, SWITCHES, AND ROUTERS FOR AGGREGATING TRAFFIC ONTO OPTICAL WAVEGUIDES
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