Improvements in and relating to microphones,申请号GB19350000136-传众专利搜索

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发明名称	Improvements in and relating to microphones
摘要
申请公布号	GB449950(A)	申请公布日期	1936.07.02
申请号	GB19350000136	申请日期	1935.01.02
申请人	LESLIE HAROLD PADDLE	发明人
分类号	H04R21/02	主分类号	H04R21/02
代理机构		代理人
主权项
地址

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