Record card and film holder assembly,申请号US19570650969-传众专利搜索

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发明名称	Record card and film holder assembly
摘要
申请公布号	US2843955(A)	申请公布日期	1958.07.22
申请号	US19570650969	申请日期	1957.04.05
申请人	ENBEE TRANSPARENT SPECIALTY COMPANY, INC.	发明人	ENGELSTEIN STANLEY
分类号	G03B21/64;G06K19/04;G06K21/02	主分类号	G03B21/64
代理机构		代理人
主权项
地址

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