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经营范围
发明名称
METHOD OF WORKING THICK GENTLY SLOPING COAL BEDS
摘要
申请公布号
SU711292(A1)
申请公布日期
1980.01.25
申请号
SU19782631036
申请日期
1978.06.16
申请人
UNIV DRUZHBY NARODOV IM PATRISA LUMUMBY
发明人
BRAGINTSEV VIKTOR F,SU;MASHKOVTSEV IGOR L,SU;ZYKOV VALERIJ N,SU;SEMENOV VYACHESLAV S,SU
分类号
(IPC1-7):E21C41/04
主分类号
(IPC1-7):E21C41/04
代理机构
代理人
主权项
地址
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