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发明名称
Mouthpiece microphone unit
摘要
申请公布号
US3114802(A)
申请公布日期
1963.12.17
申请号
US19610152434
申请日期
1961.11.15
申请人
AMERICAN OPTICAL COMPANY
发明人
BEGUIN FRED P.
分类号
H04M1/03;H04R1/08;H04R1/40
主分类号
H04M1/03
代理机构
代理人
主权项
地址
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