Instrument permettant de s'entraîner à jouer du piano,申请号FRD971001-传众专利搜索

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发明名称	Instrument permettant de s'entraîner à jouer du piano
摘要
申请公布号	FR971001(A)	申请公布日期	1951.01.11
申请号	FRD971001	申请日期	1948.09.02
申请人		发明人	LYKKE GRAVS
分类号	G10G7/00	主分类号	G10G7/00
代理机构		代理人
主权项
地址

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