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发明名称
Liquid charging devices for hydraulic pit props
摘要
申请公布号
US3148714(A)
申请公布日期
1964.09.15
申请号
US19600058123
申请日期
1960.09.23
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
HILLIER EDWARD F. H. B.
分类号
E21D15/58
主分类号
E21D15/58
代理机构
代理人
主权项
地址
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