U.S. federal trademark · Serial No. 72213374 · Reg. No. 0824414
AUDIOMETER, NOISE GENERATORS, ELECTRO-ACOUSTIC EARS, GROUP AUDIOMETERS, SOUND ANALYZERS AND ASSOCIATED AMPLIFIERS SOLD AS A SINGLE UNITS, ACOUSTIC CALIBRATORS, NOISE-ATTENUATING EARPHONE HOUSINGS, AND APPARATUS FOR TESTING HEARING
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