Improvements in or relating to apparatus, such as radio receivers, for converting acoustically-modulated oscillations into sound oscillations,申请号GB19380013707-传众专利搜索

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发明名称	Improvements in or relating to apparatus, such as radio receivers, for converting acoustically-modulated oscillations into sound oscillations
摘要
申请公布号	GB499108(A)	申请公布日期	1939.01.18
申请号	GB19380013707	申请日期	1938.05.07
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H04R3/08	主分类号	H04R3/08
代理机构		代理人
主权项
地址

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