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发明名称
Traffic signaling system
摘要
申请公布号
US2195892(A)
申请公布日期
1940.04.02
申请号
US19390259203
申请日期
1939.03.01
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
MCCANN RONALD A.
分类号
B61L29/28;G08G1/07;G08G1/08
主分类号
B61L29/28
代理机构
代理人
主权项
地址
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