IMPROVED HEARING AID SYSTEM,申请号GB19900027784-传众专利搜索

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发明名称	IMPROVED HEARING AID SYSTEM
摘要
申请公布号	GB9027784(D0)	申请公布日期	1991.02.13
申请号	GB19900027784	申请日期	1990.12.21
申请人	NORTHERN LIGHT MUSIC LIMITED	发明人
分类号	H04R25/00	主分类号	H04R25/00
代理机构		代理人
主权项
地址

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