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发明名称
Utblåsningssikring
摘要
申请公布号
NO981305(D0)
申请公布日期
1998.03.23
申请号
NO19980001305
申请日期
1998.03.23
申请人
ROGALANDSFORSKNING
发明人
FIDTJE, TORBJOERN H.
分类号
E21B21/10;E21B33/126;E21B34/06;E21B34/10;(IPC1-7):E21B
主分类号
E21B21/10
代理机构
代理人
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