SPEAKER

PROBLEM TO BE SOLVED: To enable a speaker unit which has no magnetic substance between two magnets and utilizes a rebounding magnetic field, to be reduced in cost and equipped with an effective and sufficient magnetic flux distribution so as to display the desired properties. SOLUTION: The speaker u...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SANPEI HIROSHI, TANAKA JUNICHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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