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发明名称
Perfectionnements aux dispositifs de signalisation sur les voies de chemins de fer
摘要
申请公布号
FR60042(E)
申请公布日期
1954.09.22
申请号
FRD60042
申请日期
1949.12.19
申请人
COMPAGNIE DE SIGNAUX & D'ENTREPRISES ELECTRIQUES
发明人
分类号
B61L23/16
主分类号
B61L23/16
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