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发明名称
Boresystem og fremgamgsmåte
摘要
申请公布号
NO20032655(A)
申请公布日期
2003.08.11
申请号
NO20030002655
申请日期
2003.06.12
申请人
发明人
分类号
E21B21/00;E21B21/08;E21B44/00;(IPC1-7):E21B21/08
主分类号
E21B21/00
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代理人
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