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发明名称
DEVICE FOR CUTTING SLITS IN HOLE WALLS
摘要
申请公布号
SU1641994(A2)
申请公布日期
1991.04.15
申请号
SU19894666055
申请日期
1989.03.24
申请人
PROIZV OB PO DOBYCHE UGLYA "SEVEROKUZBASSUGOL"
发明人
BARANOV VLADIMIR A,SU;NEBORSKIJ VALERIJ M,SU;LOKHOV VALERIJ I,SU;BELYAEV NIKOLAJ I,SU
分类号
E21C37/00
主分类号
E21C37/00
代理机构
代理人
主权项
地址
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