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发明名称
TRAIN CONTROL
摘要
申请公布号
CA321882(A)
申请公布日期
1932.04.26
申请号
CAD321882
申请日期
申请人
THE GENERAL RAILWAY SIGNAL COMPANY
发明人
CHARLES S. BUSHNELL
分类号
主分类号
代理机构
代理人
主权项
地址
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