Improvements in or relating to microphones,申请号GB19460029362-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	GB625743(A)	申请公布日期	1949.07.04
申请号	GB19460029362	申请日期	1946.10.02
申请人	STANDARD TELEPHONES AND CABLES LIMITED;WILLIAM DONALD CRAGG;MICHAEL LAWRENCE GAYFORD	发明人
分类号	H04M1/11;H04R1/08	主分类号	H04M1/11
代理机构		代理人
主权项
地址

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