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发明名称
Procédé et dispositif pour le relevage et le nivellement des voies ferrées
摘要
申请公布号
FR1076144(A)
申请公布日期
1954.10.22
申请号
FRD1076144
申请日期
1952.11.25
申请人
发明人
DROUARD JACQUES;BOULARD GEORGES
分类号
E01B29/04
主分类号
E01B29/04
代理机构
代理人
主权项
地址
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