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发明名称
Mine door installation
摘要
A power mine door installation utilizing compressed air from the compressed air system available in the mine as the power source for a hydraulic door-operating mechanism.
申请公布号
GB0230225(D0)
申请公布日期
2003.02.05
申请号
GB20020030225
申请日期
2002.12.27
申请人
JACK KENNEDY METAL PRODUCTS AND BUILDINGS INC
发明人
分类号
E05F15/04;E21F1/12
主分类号
E05F15/04
代理机构
代理人
主权项
地址
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