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发明名称
Appareil de levage spécialement utilisable dans la technique de l'enfoncement de pilots dans le sol
摘要
申请公布号
FR1106987(A)
申请公布日期
1955.12.27
申请号
FRD1106987
申请日期
1954.08.31
申请人
DE LONG CORPORATION
发明人
分类号
E02D7/20;E21B19/06
主分类号
E02D7/20
代理机构
代理人
主权项
地址
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