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发明名称
Utvidbar rörledning og fremgangsmåte for dens bruk
摘要
申请公布号
NO20015069(A)
申请公布日期
2002.04.22
申请号
NO20010005069
申请日期
2001.10.18
申请人
发明人
分类号
E21B29/10;A45C3/00;E21B23/00;E21B43/08;E21B43/10;(IPC1-7):E21B43/10;E21B17/00;E21B29/00
主分类号
E21B29/10
代理机构
代理人
主权项
地址
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