Device for the electromagnetic control of light for producing a sound record,申请号GB19380032684-传众专利搜索

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发明名称	Device for the electromagnetic control of light for producing a sound record
摘要
申请公布号	GB521166(A)	申请公布日期	1940.05.14
申请号	GB19380032684	申请日期	1938.11.10
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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