Improved method of manufacturing gramophone discs,申请号GB19330018958-传众专利搜索

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发明名称	Improved method of manufacturing gramophone discs
摘要
申请公布号	GB405541(A)	申请公布日期	1934.02.08
申请号	GB19330018958	申请日期	1933.07.04
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	G11B3/70	主分类号	G11B3/70
代理机构		代理人
主权项
地址

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