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发明名称
Nedihullsverktoey
摘要
申请公布号
NO934916(D0)
申请公布日期
1993.12.30
申请号
NO19930004916
申请日期
1993.12.30
申请人
SMEDVIG TECHNOLOGY AS
发明人
分类号
E21B33/127;E21B34/14;(IPC1-7):E21B
主分类号
E21B33/127
代理机构
代理人
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