Improvements in or relating to the production of sound-film records,申请号GB19300019518-传众专利搜索

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发明名称	Improvements in or relating to the production of sound-film records
摘要
申请公布号	GB350746(A)	申请公布日期	1931.06.18
申请号	GB19300019518	申请日期	1930.06.26
申请人	KLANGFILM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG	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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