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发明名称
CASING CENTERING DEVICE
摘要
申请公布号
SU832033(A1)
申请公布日期
1981.05.23
申请号
SU19782691607
申请日期
1978.12.04
申请人
UFIMSKIJ NEFTYANOJ I MINISTERSTVA VYSSHEGO SREDNEGO SP OBRAZOVANIYA RSFSR
发明人
SULTANOV BAJRAK Z,SU;YAMALTDINOV ASGAT I,SU;AKHUNOV SAGIT M,SU
分类号
E21B17/06;(IPC1-7):E21B17/06
主分类号
E21B17/06
代理机构
代理人
主权项
地址
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