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发明名称
Установка для многоперфораторного бурения шпуров при проходке вертикальных стволов шахт
摘要
申请公布号
SU121400(A1)
申请公布日期
1958.11.30
申请号
SU19580602395
申请日期
1958.06.21
申请人
DUDA E.G.
发明人
DUDA E.G.
分类号
E21B1/00;E21D1/06
主分类号
E21B1/00
代理机构
代理人
主权项
地址
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