Improvements in or relating to punched statistical record cards,申请号GB19520023158-传众专利搜索

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发明名称	Improvements in or relating to punched statistical record cards
摘要
申请公布号	GB730040(A)	申请公布日期	1955.05.18
申请号	GB19520023158	申请日期	1952.09.15
申请人	WILLI MANN	发明人
分类号	G06K19/04	主分类号	G06K19/04
代理机构		代理人
主权项
地址

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