Numeracy teaching aid,申请号GB19930007292-传众专利搜索

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发明名称	Numeracy teaching aid
摘要
申请公布号	GB2277823(A)	申请公布日期	1994.11.09
申请号	GB19930007292	申请日期	1993.04.07
申请人	JOHN * GRIFFITHS	发明人	JOHN * GRIFFITHS
分类号	G09B19/02;(IPC1-7):G09B19/02	主分类号	G09B19/02
代理机构		代理人
主权项
地址

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