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发明名称
Directional drilling
摘要
申请公布号
GB2134162(A)
申请公布日期
1984.08.08
申请号
GB19840002181
申请日期
1984.01.27
申请人
GEORGE * SWIETLIK
发明人
GEORGE * SWIETLIK
分类号
E21B7/06;E21B7/08;E21B17/07;E21B17/10;(IPC1-7):E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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