Improvements in and relating to two colour signs,申请号GB19340010955-传众专利搜索

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发明名称	Improvements in and relating to two colour signs
摘要
申请公布号	GB418958(A)	申请公布日期	1934.11.02
申请号	GB19340010955	申请日期	1934.04.11
申请人	HOLOPHANE LIMITED;HAROLD AYRES PURDIE	发明人
分类号	G09F13/00	主分类号	G09F13/00
代理机构		代理人
主权项
地址

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