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经营范围
发明名称
Drive sub for connection to a ground drill.
摘要
申请公布号
EP0678651(A3)
申请公布日期
1996.09.11
申请号
EP19950108813
申请日期
1994.06.15
申请人
DOWN HOLE TECHNOLOGIES PTY. LTD.
发明人
MCLEOD, GAVIN THOMAS;EGAN, MATTHEW VANCE
分类号
E21B7/00;E21B10/02;E21B10/62;E21B10/64;E21B10/66;E21B23/03;E21B25/02;(IPC1-7):E21B10/66
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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