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发明名称
Improvements relating to bridges for use with insets or landings in mine shafts
摘要
申请公布号
GB956977(A)
申请公布日期
1964.04.29
申请号
GB19610014643
申请日期
1961.04.22
申请人
JOHN BROOK
发明人
分类号
B66B17/18
主分类号
B66B17/18
代理机构
代理人
主权项
地址
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