Swing check for signs,申请号US19350033997-传众专利搜索

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发明名称	Swing check for signs
摘要
申请公布号	US2030378(A)	申请公布日期	1936.02.11
申请号	US19350033997	申请日期	1935.07.31
申请人	RELIANCE ADVERTISING CO.	发明人	LIPPOLD FREDERICK A.
分类号	G09F7/22	主分类号	G09F7/22
代理机构		代理人
主权项
地址

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