Visible index embodying a plurality of swingable panels,申请号US19470791908-传众专利搜索

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发明名称	Visible index embodying a plurality of swingable panels
摘要
申请公布号	US2498808(A)	申请公布日期	1950.02.28
申请号	US19470791908	申请日期	1947.12.15
申请人	ACME VISIBLE RECORDS, INC.	发明人	HALL MARCHAND B.
分类号	B42F17/22;B42F17/24	主分类号	B42F17/22
代理机构		代理人
主权项
地址

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