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发明名称
Dispositif pour le bourrage du ballast sous les traverses de chemins de fer
摘要
申请公布号
FR687469(A)
申请公布日期
1930.08.08
申请号
FRD687469
申请日期
1929.12.31
申请人
发明人
GUILBERT PAUL;LEUILLIEUX PAUL
分类号
E01B27/14
主分类号
E01B27/14
代理机构
代理人
主权项
地址
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