Improvements in or relating to record card punching machines,申请号GB19450002596-传众专利搜索

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发明名称	Improvements in or relating to record card punching machines
摘要
申请公布号	GB588167(A)	申请公布日期	1947.05.15
申请号	GB19450002596	申请日期	1945.02.01
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人
分类号	G06F7/20;G06K1/04	主分类号	G06F7/20
代理机构		代理人
主权项
地址

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