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发明名称
Device related to risers
摘要
申请公布号
AU749721(B2)
申请公布日期
2002.07.04
申请号
AU19990058851
申请日期
1999.05.31
申请人
DEN NORSKE STATS OLJESELSKAP A.S.
发明人
KNUT HARRY FJELL
分类号
E21B17/01;E21B43/01;(IPC1-7):E21B17/01
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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