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经营范围
发明名称
STOETTEINNRETNING FOR STIGEROER.
摘要
申请公布号
NO161988(B)
申请公布日期
1989.07.10
申请号
NO19840000290
申请日期
1984.01.25
申请人
BRITISH PETROLEUM COMPANY P.L.C., THE
发明人
STEPHENSON, GRAHAM WILLIAM;TOFT, RICHARD CHARLES
分类号
E21B17/01;E21B19/00;E21B43/01;(IPC1-7):E21B19/09
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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