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发明名称
Système de transmission électriques
摘要
申请公布号
FR842673(A)
申请公布日期
1939.06.16
申请号
FRD842673
申请日期
1938.02.18
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H04B3/10
主分类号
H04B3/10
代理机构
代理人
主权项
地址
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