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经营范围
发明名称
Condenser microphone
摘要
申请公布号
US2086107(A)
申请公布日期
1937.07.06
申请号
US19340725618
申请日期
1934.05.14
申请人
WILSON THEODORE R
发明人
WILSON THEODORE R.
分类号
H04R19/04
主分类号
H04R19/04
代理机构
代理人
主权项
地址
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