New or Improved Educational Means,申请号GB19680009220-传众专利搜索

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发明名称	New or Improved Educational Means
摘要
申请公布号	GB1192883(A)	申请公布日期	1970.05.20
申请号	GB19680009220	申请日期	1968.02.26
申请人	TERENCE HALL	发明人	TERENCE HALL
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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