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发明名称
Système de signalisation et de protection pour circulation ferroviaire
摘要
申请公布号
FR747381(A)
申请公布日期
1933.06.15
申请号
FRD747381
申请日期
1932.12.10
申请人
发明人
DELFOSSE;TASQUIN ALPHONSE-LAMBERT-HEN
分类号
B61L3/10
主分类号
B61L3/10
代理机构
代理人
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