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发明名称
ARRANGEMENT FOR PREVENTING CROOCKING OF WELLS
摘要
申请公布号
SU1535961(A1)
申请公布日期
1990.01.15
申请号
SU19874287904
申请日期
1987.07.21
申请人
TYUMENSKIJ INDUSTRIALNYJ I IM.LENINSKOGO KOMSOMOLA
发明人
SMYSLOV VLADIMIR K,SU;PAKHNEV VLADIMIR N,SU;GRECHIN EVGENIJ G,SU;KOPYLOV VIKTOR E,SU
分类号
E21B7/10
主分类号
E21B7/10
代理机构
代理人
主权项
地址
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