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发明名称
DEVICE FOR CENTERING PUMPING RODS
摘要
申请公布号
SU1627654(A1)
申请公布日期
1991.02.15
申请号
SU19894641308
申请日期
1989.01.25
申请人
TSNI LABORATORIYA PROIZVODSTVENNOGO OBEDINENIYA "YUGANSKNEFTEGAZ"
发明人
KUZNETSOV NIKOLAJ P,SU;KHAZIEV FANIL A,SU
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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