Connecting wire of casque

A communication system for communicating between two occupants riding on the same vehicle, or between the driver and the fellow passenger. A helmet that each occupant wears is provided with a microphone and a speaker, respectively. The external contacts of microphone and the speaker are exposed towa...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KATAYAMA MUTSUMI, MIYAMARU SACHIO, TABATA HAJIMU
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HATS HEAD COVERINGS HEADWEAR HUMAN NECESSITIES LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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