Machine for facilitating changes in arrangement of strips or cards on page card files,申请号US19460666344-传众专利搜索

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发明名称	Machine for facilitating changes in arrangement of strips or cards on page card files
摘要
申请公布号	US2494233(A)	申请公布日期	1950.01.10
申请号	US19460666344	申请日期	1946.05.01
申请人	FELDSTEIN HENRY H;FELDSTEIN MARC J	发明人	FELDSTEIN HENRY H.;FELDSTEIN MARC 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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