Perfectionnements à la production électrique de sons musicaux,申请号FRD850663-传众专利搜索

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发明名称	Perfectionnements à la production électrique de sons musicaux
摘要
申请公布号	FR850663(A)	申请公布日期	1939.12.22
申请号	FRD850663	申请日期	1939.02.21
申请人		发明人	MIDGLEY ALBERT HENRY;MIDGLEY ALBERT MORRELL
分类号	G10H3/10	主分类号	G10H3/10
代理机构		代理人
主权项
地址

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