Improvements in or relating to devices for recording or reproducing sound films,申请号GB19320016192-传众专利搜索

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发明名称	Improvements in or relating to devices for recording or reproducing sound films
摘要
申请公布号	GB403114(A)	申请公布日期	1933.12.08
申请号	GB19320016192	申请日期	1932.06.08
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	G03B31/00;G03B31/02	主分类号	G03B31/00
代理机构		代理人
主权项
地址

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