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发明名称
PROCEDE ET MACHINE POUR L'ABATTAGE ET L'EXTRACTION PAR VOTE HYDRAULIQUE DE COMBUSTIBLES FOSSILES FRIABLES
摘要
申请公布号
BE834734(A1)
申请公布日期
1976.04.22
申请号
BE19750161130
申请日期
1975.10.22
申请人
发明人
分类号
E21C25/60;E21C35/20;E21C45/00;E21F13/00;E21F13/04;(IPC1-7):E21C/
主分类号
E21C25/60
代理机构
代理人
主权项
地址
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