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发明名称
OMFORMER.
摘要
申请公布号
NO894436(D0)
申请公布日期
1989.11.08
申请号
NO19890004436
申请日期
1989.11.08
申请人
NORSKE STATS OLJESELSKAP A/S
发明人
HORVEI, KNUT;JOHNSEN, IDAR G.
分类号
E21B21/10;E21B;E21B7/18;E21B21/00;(IPC1-7):E21B/
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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