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发明名称
METHOD OF DEWATERING UNDERGROUND MINES WITHOUT PUMPING UP MINE WATERS TO SURFACE
摘要
申请公布号
PL291110(A1)
申请公布日期
1993.08.09
申请号
PL19910291110
申请日期
1991.07.17
申请人
JERSCHINA ADAM
发明人
JERSCHINA ADAM
分类号
E21F16/00;(IPC1-7):E21F16/00
主分类号
E21F16/00
代理机构
代理人
主权项
地址
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