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发明名称
TRAIN DISPATCHING SYSTEM
摘要
申请公布号
CA315690(A)
申请公布日期
1931.09.29
申请号
CAD315690
申请日期
申请人
THE GENERAL RAILWAY SIGNAL COMPANY
发明人
OSCAR H. DICKE;NEIL D. PRESTON
分类号
主分类号
代理机构
代理人
主权项
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