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发明名称
Sandfilter til bruk i en brönn
摘要
申请公布号
NO309395(B1)
申请公布日期
2001.01.22
申请号
NO19990000711
申请日期
1999.02.15
申请人
ROALDSNES, KJARTAN
发明人
ROALDSNES, KJARTAN
分类号
E21B43/08;(IPC1-7):E21B43/08
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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