Improved method for the electro-acoustical reproduction of oscillations,申请号GB19320003279-传众专利搜索

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发明名称	Improved method for the electro-acoustical reproduction of oscillations
摘要
申请公布号	GB396440(A)	申请公布日期	1933.08.04
申请号	GB19320003279	申请日期	1932.02.04
申请人	MANFRED VON ARDENNE	发明人
分类号	H04R9/04	主分类号	H04R9/04
代理机构		代理人
主权项
地址

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