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发明名称
Train control system for railroads
摘要
申请公布号
US1877555(A)
申请公布日期
1932.09.13
申请号
US19300473522
申请日期
1930.08.07
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
BUSHNELL CHARLES S.
分类号
B61L3/12
主分类号
B61L3/12
代理机构
代理人
主权项
地址
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