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发明名称
Roterende styrbart system til bruk ved boring av avviksbrönner
摘要
申请公布号
NO20014072(A)
申请公布日期
2001.10.05
申请号
NO20010004072
申请日期
2001.08.22
申请人
WEATHERFORD/LAMB INC
发明人
BUYTAERT, JEAN P
分类号
E21B7/06;E21B7/08;E21B17/10;(IPC1-7):E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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