Vorrichtung zur Veranschaulichung des pythagoreischen Lehrsatzes,申请号DE19712113555-传众专利搜索

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发明名称	Vorrichtung zur Veranschaulichung des pythagoreischen Lehrsatzes
摘要
申请公布号	DE2113555(A1)	申请公布日期	1971.10.14
申请号	DE19712113555	申请日期	1971.03.20
申请人	PILS,HELMUTH	发明人	PILS,HELMUTH
分类号	G09B23/04	主分类号	G09B23/04
代理机构		代理人
主权项
地址

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