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发明名称
Anordning ved langstrakt brönnverktöy
摘要
申请公布号
NO20021841(D0)
申请公布日期
2002.04.19
申请号
NO20020001841
申请日期
2002.04.19
申请人
MARITIME WELL SERVICE AS
发明人
TINNEN, BAARD MARTIN
分类号
E21B;E21B17/00;E21B17/14;E21B23/02;E21B40/00;E21B41/00;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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