A RADIO HEADPHONE AND MICROPHONE FOR BEING USED IT

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Bibliographic Details
Main Author PARK, GYU JIN
Format Patent
LanguageEnglish
Published 15.09.2000
Edition7
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: KR19990030391U