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发明名称
Tubular string with selectively locking rotational sub
摘要
申请公布号
GB2425138(A)
申请公布日期
2006.10.18
申请号
GB20060007260
申请日期
2006.04.11
申请人
ADVANTAGE R&D, INC.
发明人
KIRK TOWNS;PAUL RADZINSKI
分类号
E21B47/01
主分类号
E21B47/01
代理机构
代理人
主权项
地址
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