Improvements in or relating to microphones,申请号GB19580031346-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	GB859031(A)	申请公布日期	1961.01.18
申请号	GB19580031346	申请日期	1958.10.01
申请人	LUSTRAPHONE LIMITED	发明人	PONTZEN GEORGE RAOUL
分类号	H04R3/00	主分类号	H04R3/00
代理机构		代理人
主权项
地址

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