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发明名称
HIGH PRESSURE TREE CAP
摘要
申请公布号
EP0885345(A1)
申请公布日期
1998.12.23
申请号
EP19970905279
申请日期
1997.02.26
申请人
EXPRO NORTH SEA LIMITED
发明人
EDWARDS, JEFFREY CHARLES;MORGAN, MICHAEL GRAHAM
分类号
E21B33/035;E21B47/06;(IPC1-7):E21B33/035
主分类号
E21B33/035
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