U.S. federal trademark · Serial No. 73428098
TELECOMMUNICATIONS TEST EQUIPMENT, NAMELY: DUAL-TONE MULTI-FREQUENCEY (DTMF) ANALYZER; DUAL-TONE MULTI-FREQUENCY TEST SET; DUAL-TONE DECODING TEST SET; DUAL-TONE MULTI-FREQUENCY INTERFACE FOR STD BUS MICROPROCESSOR SYSTEMS; AND, TELEPHONE INSTRUMENTS TEST SET
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