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发明名称
Fremgangsmate og innretning for a forminske slitasje pa nedihullsverktoy
摘要
申请公布号
NO326553(B1)
申请公布日期
2009.01.05
申请号
NO20000004923
申请日期
2000.09.29
申请人
WEATHERFORD/LAMB INC
发明人
MILLAR IAN
分类号
E21B10/46;E21B17/10
主分类号
E21B10/46
代理机构
代理人
主权项
地址
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