Improvements in or relating to traffic control signals,申请号GB19310030227-传众专利搜索

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发明名称	Improvements in or relating to traffic control signals
摘要
申请公布号	GB391501(A)	申请公布日期	1933.05.01
申请号	GB19310030227	申请日期	1931.10.31
申请人	AUTOMATIC ELECTRIC COMPANY LIMITED;THOMAS BERTRAM HYDE	发明人
分类号	G08G1/085	主分类号	G08G1/085
代理机构		代理人
主权项
地址

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