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发明名称
METHOD OF INSERTING A PIPE INTO THE GROUND
摘要
申请公布号
EP0811106(A1)
申请公布日期
1997.12.10
申请号
EP19960905690
申请日期
1996.02.29
申请人
SCHWERT, SIEGFRIED
发明人
SCHWERT, SIEGFRIED
分类号
E21B7/18;E21B7/28;(IPC1-7):E21B7/18
主分类号
E21B7/18
代理机构
代理人
主权项
地址
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