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发明名称
Friksjonsreduserende verktoy
摘要
申请公布号
NO317687(B1)
申请公布日期
2004.12.06
申请号
NO20000002106
申请日期
2000.04.25
申请人
WEATHERFORD/LAMB INC
发明人
MURRAY GEOFFREY NEIL
分类号
E21B17/10;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
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地址
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