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发明名称
Способ отсоса рудничной пыли и устройство для осуществления этого способа
摘要
申请公布号
SU120812(A1)
申请公布日期
1958.11.30
申请号
SU19580612160
申请日期
1958.11.17
申请人
LEVIN E.M.
发明人
LEVIN E.M.
分类号
E21F5/20
主分类号
E21F5/20
代理机构
代理人
主权项
地址
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