SPEAKER UNIT

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Bibliographic Details
Main Author ISAMU HIROSE
Format Patent
LanguageEnglish
Published 18.10.1991
Edition4
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Bibliography:Application Number: HK19910000793