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发明名称
Способ закладки выработанного пространства при разработке пологопадающих пластов малой мощности
摘要
申请公布号
SU76996(A1)
申请公布日期
1948.11.30
申请号
SU19480372351
申请日期
1948.01.12
申请人
BYCHKOV B.M.;SHUMILOV V.V.
发明人
BYCHKOV B.M.;SHUMILOV V.V.
分类号
E21F15/06
主分类号
E21F15/06
代理机构
代理人
主权项
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