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发明名称
Anordning ved nedihulls brönnsikringsventil
摘要
申请公布号
NO20006212(D0)
申请公布日期
2000.12.07
申请号
NO20000006212
申请日期
2000.12.07
申请人
KONGSBERG OFFSHORE AS
发明人
JOHANSEN, JOHN A.
分类号
E21B34/00;E21B34/04;E21B34/10;(IPC1-7):E21B
主分类号
E21B34/00
代理机构
代理人
主权项
地址
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