TYPING TRAINING AID,申请号GB19890027298-传众专利搜索

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发明名称	TYPING TRAINING AID
摘要
申请公布号	GB8927298(D0)	申请公布日期	1990.01.31
申请号	GB19890027298	申请日期	1989.12.02
申请人	EVANS, SYLVIA L	发明人
分类号	G09B13/02;G09B15/08	主分类号	G09B13/02
代理机构		代理人
主权项
地址

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