Hilfseinrichtung fuer den Abdruck positiver und negativer Summen,申请号DE1931A060927D-传众专利搜索

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发明名称	Hilfseinrichtung fuer den Abdruck positiver und negativer Summen
摘要
申请公布号	DE643963(C)	申请公布日期	1937.04.22
申请号	DE1931A060927D	申请日期	1931.03.01
申请人	ASTRAWERKE AKT.-GES.	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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