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发明名称
MICROPHONE COMPRISING A DETACHABLE MAGNET SYSTEM
摘要
申请公布号
CA548459(A)
申请公布日期
1957.11.05
申请号
CAD548459
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
FRIEDRICH W. MULLER
分类号
主分类号
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