Improvements in and relating to hearing aids,申请号GB19550034634-传众专利搜索

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发明名称	Improvements in and relating to hearing aids
摘要
申请公布号	GB799294(A)	申请公布日期	1958.08.06
申请号	GB19550034634	申请日期	1955.12.02
申请人	FORTIPHONE LIMITED	发明人	CARLING FRANCIS ROCK
分类号	G02C11/06	主分类号	G02C11/06
代理机构		代理人
主权项
地址

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