Visible index or record device,申请号US19390285481-传众专利搜索

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发明名称	Visible index or record device
摘要
申请公布号	US2265429(A)	申请公布日期	1941.12.09
申请号	US19390285481	申请日期	1939.07.20
申请人	ACME VISIBLE RECORDS, INC.	发明人	HOPKINS HARRY J.
分类号	B42F17/00	主分类号	B42F17/00
代理机构		代理人
主权项
地址

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