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摘要
申请公布号
FR2685737(B1)
申请公布日期
1995.04.21
申请号
FR19910016230
申请日期
1991.12.27
申请人
INST FRANCAIS DU PETROL
发明人
EMILE LEVALLOIS
分类号
E21B43/12;F04B49/20;F04D15/00;F04D31/00;(IPC1-7):F04D31/00
主分类号
E21B43/12
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