Improvements relating to electro-dynamic reproducers or loud-speaking telephones of the moving coil type,申请号GB19470018686-传众专利搜索

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发明名称	Improvements relating to electro-dynamic reproducers or loud-speaking telephones of the moving coil type
摘要
申请公布号	GB638080(A)	申请公布日期	1950.05.31
申请号	GB19470018686	申请日期	1947.07.14
申请人	HARRY CLAUDE WILLSON	发明人
分类号	H04R9/04	主分类号	H04R9/04
代理机构		代理人
主权项
地址

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