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发明名称
DEVICE FOR APPLYING COUNTERPRESSURE TO STRATUM
摘要
申请公布号
SU571582(A1)
申请公布日期
1977.09.05
申请号
SU19742083667
申请日期
1974.12.04
申请人
TATARSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
ABDRAKHMANOV RABDRASHIT S,SU;AKHUNOV ALBERT M,SU;ANDREEV IGOR ,SU;BAZDYREV ALEKSEJ A,SU;SHAYAKHMETOV SHAMIL K,SU
分类号
E21B33/12;(IPC1-7):E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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