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经营范围
发明名称
Foringsror med isolert anulaert hulrom
摘要
申请公布号
NO318968(B1)
申请公布日期
2005.05.30
申请号
NO20020006025
申请日期
2002.12.16
申请人
KRISTIANSEN EINAR
发明人
KRISTIANSEN EINAR
分类号
E21B;E21B17/00;E21B17/01;E21B21/00;E21B27/02;E21B43/02;E21B43/11;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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