发明名称 FASTENER FOR USE IN AN OIL TOOL AND OIL TOOL PROVIDED WITH SUCH A FASTENER
摘要 A fastener for use in an oil tool between a first member (20) and a second member (30), said fastener comprising an outer member (50) which, in use, extends between said first member (20) and said second member (30), characterised in that said outer member (50) is provided with an inner recess (51).
申请公布号 WO9904131(A1) 申请公布日期 1999.01.28
申请号 WO1998GB01964 申请日期 1998.07.20
申请人 WEATHERFORD/LAMB, INC.;LUCAS, BRIAN, RONALD 发明人 HAUGEN, DAVID;ERIKSEN, ERIK, PETER, VESTERGAAD;MAHMOUD, SALAH
分类号 E21B17/046;E21B17/06;(IPC1-7):E21B17/046 主分类号 E21B17/046
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