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发明名称
Fremgangsmåte for regulering av tilbakeströmning av partikler i underjordiske brönner
摘要
申请公布号
NO964256(D0)
申请公布日期
1996.10.07
申请号
NO19960004256
申请日期
1996.10.07
申请人
SOFITECH NV
发明人
CARD, ROGER;HOWARD, PAUL;FERAUD, JEAN-PIERRE;CONSTIEN, VERNON
分类号
E21B;E21B21/00;E21B43/02;E21B43/16;E21B43/22;(IPC1-7):E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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