U.S. federal trademark · Serial No. 71537260 · Reg. No. 0506505
[ AUDIO FREQUENCY AMPLIFIERS COMPRISING ASSEMBLED UNITS FOR AMPLIFYING ELECTRIC SIGNALS, AUDIOFREQUENCY TRANSFORMERS, CHOKE COILS, ELECTRIC PICK-UP TONE ARMS, ELECTRIC PICK-UP VOLTAGE CONTROLS, ELECTRICAL SOCKETS AND PLUGS, ELECTRICAL PHONOGRAPH PICK-UPS, POWER TRANSFORMERS, ] HIGH VOLTAGE IGNITION TRANSFORMERS [ , AND ENERGIZING TRANSFORMERS FOR ELECTRIC SIGNS ]
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