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发明名称
Railway traffic controlling apparatus
摘要
申请公布号
US2082179(A)
申请公布日期
1937.06.01
申请号
US19350039461
申请日期
1935.09.06
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
O'HAGAN BERNARD E.
分类号
B61L5/06
主分类号
B61L5/06
代理机构
代理人
主权项
地址
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