Perfectionnements aux machines à calculer,申请号FRD685981-传众专利搜索

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发明名称	Perfectionnements aux machines à calculer
摘要
申请公布号	FR685981(A)	申请公布日期	1930.07.21
申请号	FRD685981	申请日期	1929.12.03
申请人		发明人	FRIDEN CARL MAURITZ FREDRICK
分类号	G06C23/02	主分类号	G06C23/02
代理机构		代理人
主权项
地址

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