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发明名称
Dispositif de sécurité pour exploitation ferroviaire
摘要
申请公布号
FR1398709(A)
申请公布日期
1965.05.14
申请号
FR19610855434
申请日期
1961.03.13
申请人
发明人
HAAS PIERRE, RENE
分类号
B61L3/12
主分类号
B61L3/12
代理机构
代理人
主权项
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