Color changing arrangement for a combined calculator and typewriter,申请号US19610144408-传众专利搜索

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发明名称	Color changing arrangement for a combined calculator and typewriter
摘要
申请公布号	US3139964(A)	申请公布日期	1964.07.07
申请号	US19610144408	申请日期	1961.10.11
申请人	OLYMPIA WERKE AG.	发明人	FISCHER FELIX
分类号	B41J35/18	主分类号	B41J35/18
代理机构		代理人
主权项
地址

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