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发明名称
Способ проходки стволов шахт в плывунах
摘要
申请公布号
SU85172(A1)
申请公布日期
1949.11.30
申请号
SU19490397291
申请日期
1949.05.16
申请人
KOKOREV V.A.
发明人
KOKOREV V.A.
分类号
E21D1/08
主分类号
E21D1/08
代理机构
代理人
主权项
地址
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