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发明名称
Capsules microphoniques
摘要
申请公布号
FR907524(A)
申请公布日期
1946.03.14
申请号
FRD907524
申请日期
1944.10.26
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H04R21/02
主分类号
H04R21/02
代理机构
代理人
主权项
地址
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