LOUDSPEAKING TELEPHONE STATION INCLUDING DIRECTIONAL MICROPHONE

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Hauptverfasser:	MCATEER, JEFFREY P, WITTMAN, BRIAN A, BAUMHAUER, JOHN C
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS TELEPHONIC COMMUNICATION
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creator	MCATEER, JEFFREY P WITTMAN, BRIAN A BAUMHAUER, JOHN C
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subjects	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS TELEPHONIC COMMUNICATION
title	LOUDSPEAKING TELEPHONE STATION INCLUDING DIRECTIONAL MICROPHONE
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