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发明名称
Procédé et appareil d'exploitation minière applicables notamment à l'extraction de la houille
摘要
申请公布号
FR1172248(A)
申请公布日期
1959.02.06
申请号
FRD1172248
申请日期
1957.02.08
申请人
发明人
MILIK RUDOLF
分类号
E21C25/56
主分类号
E21C25/56
代理机构
代理人
主权项
地址
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