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发明名称
DEVICE FOR STEPWISE CEMENTING OF WELLS
摘要
申请公布号
SU1625977(A1)
申请公布日期
1991.02.07
申请号
SU19864040964
申请日期
1986.04.02
申请人
VNII BUROVOJ TEKHNIKI;KOMBINAT "NEFT GAZ" (INOPREDPRIYATIE)
发明人
VANIFATEV VLADIMIR I,SU;TSYRIN YURIJ Z,SU;DUDALADOV ANATOLIJ K,SU;KHAMMER GERD,DD;GERISH KLAUS,DD;GAJSLER KHANS-YURGEN,DD;SHMIRGAL RAJNER,DD
分类号
E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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