Improvements in or relating to microphones,申请号GB19500020152-传众专利搜索

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发明名称	Improvements in or relating to microphones
摘要
申请公布号	GB701444(A)	申请公布日期	1953.12.23
申请号	GB19500020152	申请日期	1950.08.14
申请人	TANNOY LIMITED	发明人	RACKHAM RONALD HASTINGS;LIVINGSTONE TERENCE BRIAN
分类号	H04M1/03;H04R1/08	主分类号	H04M1/03
代理机构		代理人
主权项
地址

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