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发明名称
Systèmes de signalisation électriques
摘要
申请公布号
FR882439(A)
申请公布日期
1943.06.02
申请号
FRD882439
申请日期
1942.05.29
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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