Improved hearing aid,申请号GB19990009285-传众专利搜索

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发明名称	Improved hearing aid
摘要
申请公布号	GB9909285(D0)	申请公布日期	1999.06.16
申请号	GB19990009285	申请日期	1999.04.23
申请人	HOWIE, ROBIN M	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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