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发明名称
GJENNOMFOERINGSBEHOLDER FOR SKRAARIGG.
摘要
申请公布号
NO911662(A)
申请公布日期
1991.11.18
申请号
NO19910001662
申请日期
1991.04.26
申请人
HALLIBURTON COMPANY
发明人
BALDRIDGE, MORRIS G.
分类号
E21B15/04;E21B33/05;(IPC1-7):E21B33/05
主分类号
E21B15/04
代理机构
代理人
主权项
地址
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