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发明名称
Механическое устройство для выдачи породы из забоя шахты
摘要
申请公布号
SU25918(A1)
申请公布日期
1932.03.31
申请号
SU19300071088
申请日期
1930.06.01
申请人
BORODULIN A.M.;GERTNER A.N.
发明人
BORODULIN A.M.;GERTNER A.N.
分类号
E21D1/03
主分类号
E21D1/03
代理机构
代理人
主权项
地址
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