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发明名称
Perfectionnements aux dispositifs de volume-contrôle automatique pour appareils radio-récepteurs
摘要
申请公布号
FR780068(A)
申请公布日期
1935.04.18
申请号
FRD780068
申请日期
1934.10.20
申请人
E. K. COLE LIMITED
发明人
分类号
H03G3/26
主分类号
H03G3/26
代理机构
代理人
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