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发明名称
WASHPIPE STABILISATION
摘要
申请公布号
EP0898638(A1)
申请公布日期
1999.03.03
申请号
EP19970920827
申请日期
1997.05.02
申请人
THE RED BARON (OIL TOOLS RENTAL) LIMITED
发明人
BRUCE, RONALD, JAMES
分类号
E21B17/22;E21B31/00;E21B31/03;E21B37/02;(IPC1-7):E21B31/00;E21B17/10;E21B29/00
主分类号
E21B17/22
代理机构
代理人
主权项
地址
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