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发明名称
SEMENTERINGSREDSKAP.
摘要
申请公布号
NO911625(D0)
申请公布日期
1991.04.24
申请号
NO19910001625
申请日期
1991.04.24
申请人
HALLIBURTON COMPANY
发明人
GIROUX, RICHARD L.;BRANDELL, JOHN T.
分类号
E21B23/02;E21B33/16;E21B34/14;(IPC1-7):E21B/
主分类号
E21B23/02
代理机构
代理人
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地址
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