Automatic zeros punching device under key and program card control,申请号US19520315247-传众专利搜索

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发明名称	Automatic zeros punching device under key and program card control
摘要
申请公布号	US2737241(A)	申请公布日期	1956.03.06
申请号	US19520315247	申请日期	1952.10.17
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	DOTY CHARLES R.
分类号		主分类号
代理机构		代理人
主权项
地址

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