Perfectionnements aux machines à perforer les cartes,申请号FRD714813-传众专利搜索

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发明名称	Perfectionnements aux machines à perforer les cartes
摘要
申请公布号	FR714813(A)	申请公布日期	1931.11.20
申请号	FRD714813	申请日期	1931.04.04
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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