Electronic cancellation of ambient noise in telephone receivers,申请号EP19930308341-传众专利搜索

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发明名称	Electronic cancellation of ambient noise in telephone receivers
摘要
申请公布号	EP0596623(B1)	申请公布日期	2001.04.18
申请号	EP19930308341	申请日期	1993.10.20
申请人	AT&T CORP.	发明人	BENNING, ROGER DAVID;FISCHER, ELLIOT ANDREW;GREENE, PATRICIA LEE;SANFORD, CHARLES;SCHNEIDER, ROBERT EDWARD
分类号	H04M1/00;H04M1/19;H04M1/60;(IPC1-7):H04M1/19	主分类号	H04M1/00
代理机构		代理人
主权项
地址

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