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发明名称
Track circuit apparatus
摘要
申请公布号
US2196616(A)
申请公布日期
1940.04.09
申请号
US19390296830
申请日期
1939.09.27
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
THOMPSON HOWARD A.;BAUGHMAN GEORGE W.
分类号
B61L1/18
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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