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发明名称
Downhole tool
摘要
申请公布号
GB0309038(D0)
申请公布日期
2003.05.28
申请号
GB20030009038
申请日期
2003.04.22
申请人
SPECIALISED PETROLEUM SERVICES GROUP LIMITED
发明人
分类号
E21B23/00;E21B23/08;E21B34/14
主分类号
E21B23/00
代理机构
代理人
主权项
地址
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