Teaching aids,申请号GB20020024833-传众专利搜索

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发明名称	Teaching aids
摘要
申请公布号	GB0224833(D0)	申请公布日期	2002.12.04
申请号	GB20020024833	申请日期	2002.10.25
申请人	REDMAN, JOHN B	发明人
分类号	G09B19/12	主分类号	G09B19/12
代理机构		代理人
主权项
地址

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