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发明名称
Coded track circuit employing feedback energy
摘要
申请公布号
US2503716(A)
申请公布日期
1950.04.11
申请号
US19490080658
申请日期
1949.03.10
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
FAILOR CHARLES W.
分类号
B61L23/16
主分类号
B61L23/16
代理机构
代理人
主权项
地址
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