Relay type cross-totalizing device for record card data,申请号US19430481228-传众专利搜索

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发明名称	Relay type cross-totalizing device for record card data
摘要
申请公布号	US2420167(A)	申请公布日期	1947.05.06
申请号	US19430481228	申请日期	1943.03.31
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	DICKINSON ARTHUR H.;WHEELER JOHN N.
分类号	G06F7/42	主分类号	G06F7/42
代理机构		代理人
主权项
地址

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