Lehrmittel fuer den Anfangsunterricht im Rechnen,申请号DE19661497761-传众专利搜索

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发明名称	Lehrmittel fuer den Anfangsunterricht im Rechnen
摘要
申请公布号	DE1497761(B1)	申请公布日期	1970.08.27
申请号	DE19661497761	申请日期	1966.11.16
申请人	VOGL MATTHIAS	发明人	VOGL MATTHIAS
分类号	G09B19/02	主分类号	G09B19/02
代理机构		代理人
主权项
地址

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