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发明名称
Dispositif de garantie contre les catastrophes de chemins de fer, notamment aux passages à niveau gardés
摘要
申请公布号
FR730863(A)
申请公布日期
1932.08.25
申请号
FRD730863
申请日期
1932.02.02
申请人
发明人
DELHAYE SIMON GHISLAIN
分类号
B61L3/04
主分类号
B61L3/04
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