Improvements relating to electric bells,申请号GB19440024671-传众专利搜索

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发明名称	Improvements relating to electric bells
摘要
申请公布号	GB584100(A)	申请公布日期	1947.01.07
申请号	GB19440024671	申请日期	1944.12.08
申请人	ALFRED GRAHAM & CO. LIMITED;CYRIL HUGH VAUGHAN	发明人
分类号	G10K1/26	主分类号	G10K1/26
代理机构		代理人
主权项
地址

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