TRANSISTOR AMPLIFIER HEARING AID UNIT WITH RECEIVER VIBRATION FEEDBACK SUPPRESSION,申请号CAD637198-传众专利搜索

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发明名称	TRANSISTOR AMPLIFIER HEARING AID UNIT WITH RECEIVER VIBRATION FEEDBACK SUPPRESSION
摘要
申请公布号	CA637198(A)	申请公布日期	1962.02.27
申请号	CAD637198	申请日期
申请人	SONOTONE CORPORATION	发明人	FRANK A. HERRMANN
分类号		主分类号
代理机构		代理人
主权项
地址

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