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经营范围
发明名称
Improvements in road traffic control systems
摘要
申请公布号
GB501191(A)
申请公布日期
1939.02.21
申请号
GB19370014210
申请日期
1937.05.21
申请人
THE SIEMENS AND GENERAL ELECTRIC RAILWAY SIGNAL COMPANY LIMITED;FREDERICK ALLAN DOWNES;NEHEMIAH HERWALD
发明人
分类号
G08G1/082
主分类号
G08G1/082
代理机构
代理人
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地址
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