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发明名称
METHOD OF AIRING QUARRIES
摘要
申请公布号
SU589420(A1)
申请公布日期
1978.01.25
申请号
SU19752170331
申请日期
1975.09.08
申请人
INST GORNOGO DELA SIBIRSKOGO
发明人
FILATOV SERGEJ S,SU;ROSLYAKOV STANISLAV M,SU;PAVLOV ALEKSANDR ,SU
分类号
E21F1/00;(IPC1-7):E21F1/00
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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