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发明名称
APPARATUS FOR HYDRAULIC MINING
摘要
申请公布号
SU708055(A1)
申请公布日期
1980.01.05
申请号
SU19772464210
申请日期
1977.03.21
申请人
KOVALENKO EVGENIJ S,SU
发明人
KOVALENKO EVGENIJ S,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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