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发明名称
VORRICHTUNG ZUM FOERDERN VON ROHOEL AUS EINEM UNTERTAEGIGEN SPEICHER
摘要
申请公布号
DE4102398(A1)
申请公布日期
1991.08.29
申请号
DE19914102398
申请日期
1991.01.28
申请人
INTEVEP S.A., CARACAS, VE
发明人
CHACIN, JESUS E., TULVA, OKLA., US
分类号
E21B41/02;E21B43/12;E21B43/25;H04N1/32
主分类号
E21B41/02
代理机构
代理人
主权项
地址
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