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发明名称
Frakoblbart svivelarrangement
摘要
申请公布号
NO20020091(D0)
申请公布日期
2002.01.08
申请号
NO20020000091
申请日期
2002.01.08
申请人
FRAMO ENGINEERING AS
发明人
ERSTAD, JOSTEIN
分类号
E21B;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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