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发明名称
DOWNHOLE STRING BYPASS APPARATUS
摘要
申请公布号
EP0265054(B1)
申请公布日期
1992.10.07
申请号
EP19870307562
申请日期
1987.08.26
申请人
HALLIBURTON COMPANY
发明人
CHRISTENSEN, JON BRENT
分类号
E21B33/124
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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