Improvements in or relating to amplifier installations for use with devices for electrically reproducing sound vibrations,申请号GB19300034330-传众专利搜索

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发明名称	Improvements in or relating to amplifier installations for use with devices for electrically reproducing sound vibrations
摘要
申请公布号	GB373112(A)	申请公布日期	1932.05.19
申请号	GB19300034330	申请日期	1930.11.14
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H04R3/12	主分类号	H04R3/12
代理机构		代理人
主权项
地址

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