Improvements in or relating to luminous signs,申请号GB19390013409-传众专利搜索

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发明名称	Improvements in or relating to luminous signs
摘要
申请公布号	GB523192(A)	申请公布日期	1940.07.08
申请号	GB19390013409	申请日期	1938.12.23
申请人	NEOGRAPH LIMITED;FERDINAND KNEPPER	发明人
分类号	G09F9/313	主分类号	G09F9/313
代理机构		代理人
主权项
地址

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