HEAD SET

PROBLEM TO BE SOLVED: To easily detach and adjust a bone microphone by constituting a head set of an ear muff incorporating a speaker for reproducing a sound signal from the outside a bone microphone for outputting the vibration signal of the voice of user to the outside, and a retainer freely attac...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	NAKAJIMA SADAKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS TRANSMISSION
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