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发明名称
Silencieux pour microphones d'appareils téléphoniques
摘要
申请公布号
FR1202970(A)
申请公布日期
1960.01.14
申请号
FRD1202970
申请日期
1958.03.26
申请人
发明人
JUNGHANS HELMUT
分类号
H04M1/03
主分类号
H04M1/03
代理机构
代理人
主权项
地址
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