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发明名称
METHOD OF UNDERGROUND MINING OF EVER-FROZEN PLACER MINERAL DEPOSITS
摘要
申请公布号
SU753190(A1)
申请公布日期
1984.12.23
申请号
SU19782693752
申请日期
1978.12.07
申请人
VNII ZOLOTA REDKIKH METALLOV
发明人
EMELYANOV V.I.,SU;MAMAEV YU.A.,SU;KUDLAJ E.D.,SU;EGUPOV A.A.,SU;RUTKEVICH V.V.,SU;SURKOV G.I.,SU;POZDNYAKOV E.S.,SU
分类号
(IPC1-7):E21C41/14
主分类号
(IPC1-7):E21C41/14
代理机构
代理人
主权项
地址
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