Improvements in or relating to carbon microphone capsules and more particularly to carbon microphone capsules having a carbon chamber protected against dampness,申请号GB19620008126-传众专利搜索

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发明名称	Improvements in or relating to carbon microphone capsules and more particularly to carbon microphone capsules having a carbon chamber protected against dampness
摘要
申请公布号	GB957384(A)	申请公布日期	1964.05.06
申请号	GB19620008126	申请日期	1962.03.02
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H04M1/03;H04R21/02	主分类号	H04M1/03
代理机构		代理人
主权项
地址

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