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发明名称
SYSTEM OF OIL PROTECTION OF STOPE MOTOR
摘要
申请公布号
RU2068065(C1)
申请公布日期
1996.10.20
申请号
SU19894676616
申请日期
1989.04.11
申请人
PERMSKIJ FILIAL VSEROSSIJSKOGO NAUCHNO-ISSLEDOVATELSKOGO INSTITUTA BUROVOJ TEKHNIKI
发明人
CHUDAKOV GEORGIJ F;DERKACH NIKOLAJ D;KRUTIK ERNST N
分类号
E21B4/00;(IPC1-7):E21B4/00
主分类号
E21B4/00
代理机构
代理人
主权项
地址
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