Puzzle block set for 19×19 multiplication table,申请号KR20060007219U-传众专利搜索

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发明名称	Puzzle block set for 19×19 multiplication table
摘要
申请公布号	KR200424696(Y1)	申请公布日期	2006.08.28
申请号	KR20060007219U	申请日期	2006.03.17
申请人		发明人
分类号	A63F9/12;G09B1/00	主分类号	A63F9/12
代理机构		代理人
主权项
地址

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