Educational aid for teaching reading,申请号US19580723798-传众专利搜索

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发明名称	Educational aid for teaching reading
摘要
申请公布号	US2922234(A)	申请公布日期	1960.01.26
申请号	US19580723798	申请日期	1958.03.25
申请人	PATTERSON CHARLES W	发明人	PATTERSON CHARLES W.
分类号	G09B17/00	主分类号	G09B17/00
代理机构		代理人
主权项
地址

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