Improvements in or relating to radio-electric or electro-acoustic apparatus,申请号GB19380014609-传众专利搜索

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发明名称	Improvements in or relating to radio-electric or electro-acoustic apparatus
摘要
申请公布号	GB508132(A)	申请公布日期	1939.06.27
申请号	GB19380014609	申请日期	1938.05.16
申请人	LUCIEN ARMAND BOLLACK	发明人
分类号	H04R1/02	主分类号	H04R1/02
代理机构		代理人
主权项
地址

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