Improvements in or relating to apparatus for teaching knowledge,申请号GB19650021250-传众专利搜索

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发明名称	Improvements in or relating to apparatus for teaching knowledge
摘要
申请公布号	GB1124794(A)	申请公布日期	1968.08.21
申请号	GB19650021250	申请日期	1965.05.19
申请人	GERALD BARRY STILLIT	发明人
分类号	G09B7/06	主分类号	G09B7/06
代理机构		代理人
主权项
地址

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