U.S. federal trademark · Serial No. 72139256 · Reg. No. 0751989
TRANSMITTERS, TRANSCEIVERS, RECEIVERS, AMPLIFIERS, PREAMPLIFIERS, TUNERS, SPEAKERS, MULTIPLEX ADAPTORS, STEREOPHONIC CONTROLS, REVERBERATION UNITS, ANTENNAS, PUBLIC ADDRESS SYSTEMS, INTERCOMMUNICATION SYSTEMS, TRANSFORMERS, CHOKES, TWINLINE, MICROPHONES, HEADSETS, MICROPHONE STANDS, DIRECT CURRENT POWER SUPPLIES, AND CODE PRACTICE SETS
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