U.S. federal trademark · Serial No. 71610592 · Reg. No. 0570945
UNITS FOR LOCAL, VOICECOMMUNICATING, ELECTRONICALLY OPERATED, INTER-COMMUNICATION SYSTEMS-NAMELY, MICROPHONE UNITS, LOUDSPEAKER UNITS, COMBINATION MICROPHONE AND LOUDSPEAKER UNITS, CONTROL AMPLIFIER UNITS, AND JUNCTION BOXES
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