Apparatus for teaching or studying mathematics,申请号GB19610031426-传众专利搜索

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发明名称	Apparatus for teaching or studying mathematics
摘要
申请公布号	GB945969(A)	申请公布日期	1964.01.08
申请号	GB19610031426	申请日期	1961.08.31
申请人	ALGERON FREDERICK SETON POLLOCK	发明人
分类号	G09B23/02	主分类号	G09B23/02
代理机构		代理人
主权项
地址

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