Easel for flexible posters,申请号US19450572521-传众专利搜索

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发明名称	Easel for flexible posters
摘要
申请公布号	US2419181(A)	申请公布日期	1947.04.15
申请号	US19450572521	申请日期	1945.01.12
申请人	SWEENEY LITHOGRAPH COMPANY, INC.	发明人	WATSON JOHN
分类号	G09F1/14	主分类号	G09F1/14
代理机构		代理人
主权项
地址

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