Procédé pour la constitution de films sonores par voie optique,申请号FRD876674-传众专利搜索

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发明名称	Procédé pour la constitution de films sonores par voie optique
摘要
申请公布号	FR876674(A)	申请公布日期	1942.11.12
申请号	FRD876674	申请日期	1941.11.10
申请人	I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT	发明人
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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