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发明名称
Rotary drill bit
摘要
申请公布号
EP0707132(A3)
申请公布日期
1997.04.09
申请号
EP19950306937
申请日期
1995.09.29
申请人
CAMCO DRILLING GROUP LIMITED
发明人
NEWTON, ALEX;TAYLOR, STEVEN;MURDOCK, ANDREW;CLEGG, JOHN M.
分类号
E21B10/00;E21B10/54;E21B10/55;E21B10/56;E21B10/567;E21B10/60;E21B17/10;(IPC1-7):E21B10/60
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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