Rotatable display sign with shutter,申请号US19480000551-传众专利搜索

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发明名称	Rotatable display sign with shutter
摘要
申请公布号	US2481941(A)	申请公布日期	1949.09.13
申请号	US19480000551	申请日期	1948.01.05
申请人	NEWTON MORTON RICHARD	发明人	MORTON RICHARD NEWTON
分类号	G09F11/02;G09F13/00	主分类号	G09F11/02
代理机构		代理人
主权项
地址

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