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发明名称
APPARATUS FOR HYDRAULIC WELL-MINING OF MINERALS
摘要
申请公布号
SU827793(A1)
申请公布日期
1981.05.07
申请号
SU19792780827
申请日期
1979.06.15
申请人
SHPAK DMITRIJ N,SU
发明人
SHPAK DMITRIJ N,SU
分类号
E21C45/00;(IPC1-7):E21C45/00
主分类号
E21C45/00
代理机构
代理人
主权项
地址
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