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发明名称
Microphone
摘要
申请公布号
FR994075(A)
申请公布日期
1951.11.12
申请号
FRD994075
申请日期
1944.12.15
申请人
发明人
BAULU ROBERT
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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