Communications echo suppression,申请号US19640367085-传众专利搜索

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发明名称	Communications echo suppression
摘要
申请公布号	US3370294(A)	申请公布日期	1968.02.20
申请号	US19640367085	申请日期	1964.05.13
申请人	LEONARD R. KAHN	发明人	KAHN LEONARD R.
分类号	H04B3/21	主分类号	H04B3/21
代理机构		代理人
主权项
地址

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