Appareil acoustique avec compensation de rétroaction.,申请号CH19900002690-传众专利搜索

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发明名称	Appareil acoustique avec compensation de rétroaction.
摘要
申请公布号	CH683477(A5)	申请公布日期	1994.03.15
申请号	CH19900002690	申请日期	1990.08.17
申请人	OTICON A/S	发明人	WEINRICH, SOREN
分类号	H04R25/00;(IPC1-7):H04R25/02	主分类号	H04R25/00
代理机构		代理人
主权项
地址

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