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经营范围
发明名称
Microphone à condensateur
摘要
申请公布号
FR804785(A)
申请公布日期
1936.11.02
申请号
FRD804785
申请日期
1936.03.26
申请人
发明人
BRAUNMU:HL VON;WEBER
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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