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发明名称
Improved well bore anchors
摘要
申请公布号
GB0504471(D0)
申请公布日期
2005.04.13
申请号
GB20050004471
申请日期
2005.03.04
申请人
PETROWELL LIMITED
发明人
分类号
E21B23/01
主分类号
E21B23/01
代理机构
代理人
主权项
地址
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