U.S. federal trademark · Serial No. 72191619 · Reg. No. 0813211
[ MEASURING AND TESTING APPARATUS FOR MEASURING AND TESTING THE ELECTRICAL AND ACOUSTIC CHARACTERISTICS OF ELECTRICAL AND ELECTROACOUSTICAL APPARATUS AND DEVICES ]
SOUND RECORDERS AND REPRODUCERS, SOUND AMPLIFIERS, MICROPHONES, EAR PHONES, AND COMPONENT PARTS THEREOF
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