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发明名称
DRILL STRING SCREWING-UNSCREWING APPARATUS
摘要
申请公布号
SU708048(A1)
申请公布日期
1980.01.05
申请号
SU19762436368
申请日期
1976.12.30
申请人
GORNORUDNAYA CHAST I "GIPROMASHOBOGASHCHENIE"
发明人
VUKKERT ALEKSANDR A,SU;KOTUKH ALEKSEJ A,SU;NARINSKIJ ISAAK E,SU;SOLDATOV VIKTOR A,SU;CHUGUNOV VIKTOR D,SU
分类号
E21B19/10;(IPC1-7):E21B19/10
主分类号
E21B19/10
代理机构
代理人
主权项
地址
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