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发明名称
Sandfilter device for use in the recovery of oil gas and water
摘要
申请公布号
GB0121058(D0)
申请公布日期
2001.10.24
申请号
GB20010021058
申请日期
2000.02.03
申请人
ROALDSNES, KJARTAN
发明人
分类号
E21B43/08
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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