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发明名称
Contact microphone
摘要
申请公布号
US2260727(A)
申请公布日期
1941.10.28
申请号
US19380218728
申请日期
1938.07.12
申请人
TELEPHONICS CORPORATION
发明人
SEARS STERLING G.;SR. WILLIAM T. WEIDENMAN,
分类号
H04R1/14;H04R21/02
主分类号
H04R1/14
代理机构
代理人
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地址
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