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发明名称
Apparatus for the control of water spraying devices in mines
摘要
申请公布号
GB686475(A)
申请公布日期
1953.01.28
申请号
GB19500010843
申请日期
1950.05.02
申请人
TAGE GEORGE NYBORG;THE MINING ENGINEERING COMPANY LIMITED
发明人
分类号
E21C35/22;E21F5/02
主分类号
E21C35/22
代理机构
代理人
主权项
地址
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