Improvements in or relating to means for teaching music,申请号GB19380009848-传众专利搜索

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发明名称	Improvements in or relating to means for teaching music
摘要
申请公布号	GB513089(A)	申请公布日期	1939.10.03
申请号	GB19380009848	申请日期	1938.03.31
申请人	EDITH MAUDE HILL	发明人
分类号	G09B15/04	主分类号	G09B15/04
代理机构		代理人
主权项
地址

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