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发明名称
Systèmes de signalisation pour chemins de fer par exemple
摘要
申请公布号
FR842199(A)
申请公布日期
1939.06.07
申请号
FRD842199
申请日期
1938.08.16
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
B61L25/08
主分类号
B61L25/08
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