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发明名称
Side drive drilling
摘要
申请公布号
GB2178780(A)
申请公布日期
1987.02.18
申请号
GB19860016840
申请日期
1986.07.10
申请人
* VETCO OFFSHORE INDUSTRIES INC
发明人
IGOR * KRASNOV
分类号
E21B3/00;E21B3/02;E21B19/08;(IPC1-7):E21B3/02
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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