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发明名称
Systèmes de transmission d'ondes électriques
摘要
申请公布号
FR906932(A)
申请公布日期
1946.02.25
申请号
FRD906932
申请日期
1944.09.12
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H04B17/40
主分类号
H04B17/40
代理机构
代理人
主权项
地址
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