Device for educating a child,申请号US19600030273-传众专利搜索

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发明名称	Device for educating a child
摘要
申请公布号	US3013348(A)	申请公布日期	1961.12.19
申请号	US19600030273	申请日期	1960.05.19
申请人	CASTEEL CHARLES P	发明人	CASTEEL CHARLES P.
分类号	G09B19/00	主分类号	G09B19/00
代理机构		代理人
主权项
地址

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