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发明名称
Traffic direction control apparatus for use in centralized traffic control systems for single-track railroads
摘要
申请公布号
US2528073(A)
申请公布日期
1950.10.31
申请号
US19450592947
申请日期
1945.05.10
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
PASCOE FRANK T.;JEROME ARTHUR L.
分类号
B61L23/22
主分类号
B61L23/22
代理机构
代理人
主权项
地址
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