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发明名称
SPINDLE OF DOWNHOLE MOTOR
摘要
申请公布号
SU1629451(A1)
申请公布日期
1991.02.23
申请号
SU19884426163
申请日期
1988.05.13
申请人
VNII BUROVOJ TEKHNIKI
发明人
SHUMILOV VALERIAN P,SU;KONSTANTINOV IGOR L,SU;VALDMAN ISAAK YA,SU;SEMKIN KONSTANTIN D,SU
分类号
E21B4/00
主分类号
E21B4/00
代理机构
代理人
主权项
地址
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