Procédé d'enregistrement et de reproduction des sons,申请号FRD689850-传众专利搜索

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发明名称	Procédé d'enregistrement et de reproduction des sons
摘要
申请公布号	FR689850(A)	申请公布日期	1930.09.11
申请号	FRD689850	申请日期	1930.02.13
申请人		发明人	LANGUEPIN JACQUES-EMILE-JULES
分类号	G11B5/74	主分类号	G11B5/74
代理机构		代理人
主权项
地址

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