Improvements in or relating to sign devices for advertising purposes and the like,申请号GB19540037170-传众专利搜索

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发明名称	Improvements in or relating to sign devices for advertising purposes and the like
摘要
申请公布号	GB752787(A)	申请公布日期	1956.07.11
申请号	GB19540037170	申请日期	1954.12.23
申请人	JOHAN ALFRED NYGREN	发明人
分类号	G09F7/18	主分类号	G09F7/18
代理机构		代理人
主权项
地址

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