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发明名称
ARRANGEMENT FOR ISOLATING DIFFICULT ZONES IN BOREHOLE
摘要
申请公布号
SU685808(A1)
申请公布日期
1979.09.15
申请号
SU19782644504
申请日期
1978.07.11
申请人
LE , OP¯EHA OKTù¬PÓCKOö PEBOó½|ôô ô OP¯EHA TPY¯OBO×O KPACHO×O ³HAMEHô ×OPHÕö ôHCTôTYT ôM. ×.B.üóEXAHOBA
发明人
NIKOLAEV NIKOLAJ ,SU;TERESHCHENKO LEV A,SU;GORSHKOV LEV K,SU;YAKOVLEV ARIAN M,SU
分类号
E21B33/13;E21B27/02;(IPC1-7):E21B33/13
主分类号
E21B33/13
代理机构
代理人
主权项
地址
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