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发明名称
Borekrone for boring under kjöring av fôringsrör
摘要
申请公布号
NO20022831(D0)
申请公布日期
2002.06.14
申请号
NO20020002831
申请日期
2002.06.14
申请人
WEATHERFORD/LAMB INC
发明人
WARDLEY, MICHAEL
分类号
E21B7/20;E21B10/42;E21B10/43;E21B10/54;E21B17/14;(IPC1-7):E21B7/20
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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