Drive control arrangement for portable adding machines,申请号US19570654556-传众专利搜索

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发明名称	Drive control arrangement for portable adding machines
摘要
申请公布号	US2945569(A)	申请公布日期	1960.07.19
申请号	US19570654556	申请日期	1957.04.23
申请人	CHAMBERS PAUL C	发明人	CHAMBERS PAUL C.
分类号	G06C23/02	主分类号	G06C23/02
代理机构		代理人
主权项
地址

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