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发明名称
Improvements in liquid charging devices for hydraulic pit props
摘要
申请公布号
GB910755(A)
申请公布日期
1962.11.21
申请号
GB19590032895
申请日期
1959.09.28
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
HILLIE EDWARD FRANCIS HERBERT BENJAMIN
分类号
E21D15/58;E21D15/59
主分类号
E21D15/58
代理机构
代理人
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