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经营范围
发明名称
MINE STOPPING
摘要
申请公布号
SU1740690(A1)
申请公布日期
1992.06.15
申请号
SU19894731964
申请日期
1989.08.25
申请人
NI PK I PO DOBYCHE POLEZNYKH ISKOPAEMYKH OTKRYTYM SPOSOBOM
发明人
STARODUMOV NIKOLAJ A,SU;RYLEEV VALERIJ S,SU;KISELEV VIKTOR G,SU;MILMAN EDUARD N,SU;ULYANOV VIKTOR M,SU
分类号
E21F5/00
主分类号
E21F5/00
代理机构
代理人
主权项
地址
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