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发明名称
Apparatus for circulating fluid in a borehole
摘要
申请公布号
GB9601659(D0)
申请公布日期
1996.03.27
申请号
GB19960001659
申请日期
1996.01.27
申请人
PATERSON, ANDREW W;CARMICHAEL, MARK
发明人
分类号
E21B21/10;E21B23/00;E21B34/10;E21B34/14
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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