U.S. federal trademark · Serial No. 73189814 · Reg. No. 1130740
HIGH FIDELITY AUDIO SYSTEMS AND COMPONENTS, COMPRISING CARTRIDGE PRE-AMPLIFIERS, PRE-AMPLIFIERS, AMPLIFIERS, CROSSOVER [ NETWORDS, ] * NETWORKS, * [TAPE RECORDERS, SOUND MIXERS,] AND PACKAGED CIRCUITS-NAMELY, PRE-AMPLIFIERS, LINE DRIVERS, AND FILTERS
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