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发明名称
VERFAHREN UND EINRICHTUNG ZUM HEBEN VON BOHRLOCHFLUIDS MITTELS GAS
摘要
申请公布号
DE3004656(A1)
申请公布日期
1980.09.04
申请号
DE19803004656
申请日期
1980.02.08
申请人
KALINA,ALEXANDER I.
发明人
I. KALINA,ALEXANDER
分类号
E21B43/12;E21B43/34;(IPC1-7):E21B43/18
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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