Improvements in advertising devices,申请号GB19280034025-传众专利搜索

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发明名称	Improvements in advertising devices
摘要
申请公布号	GB323607(A)	申请公布日期	1930.01.09
申请号	GB19280034025	申请日期	1928.11.20
申请人	HANS ANDVIG	发明人
分类号	G09F19/18	主分类号	G09F19/18
代理机构		代理人
主权项
地址

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