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经营范围
发明名称
DRIVING PIPES THROUGH GROUND
摘要
申请公布号
GB8411201(D0)
申请公布日期
1984.06.06
申请号
GB19840011201
申请日期
1984.05.02
申请人
SCHMIDT, P
发明人
分类号
E02D7/00;E02D7/26;E21B7/04;E21B7/20;E21B10/02;E21B17/18;E21B21/00;(IPC1-7):E02D7/26
主分类号
E02D7/00
代理机构
代理人
主权项
地址
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