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发明名称
Active controlled bottomhole pressure system and method with continuous circulation system
摘要
申请公布号
GB0724939(D0)
申请公布日期
2008.01.30
申请号
GB20070024939
申请日期
2006.06.16
申请人
BAKER HUGHES INCORPORATED
发明人
分类号
主分类号
代理机构
代理人
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