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发明名称
Downhole tool
摘要
申请公布号
GB0807966(D0)
申请公布日期
2008.06.11
申请号
GB20080007966
申请日期
2008.05.01
申请人
ATHERTON, ERIC
发明人
分类号
E21B47/08;E21B47/09
主分类号
E21B47/08
代理机构
代理人
主权项
地址
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