Voice switching apparatus and method,申请号GB19910024899-传众专利搜索

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发明名称	Voice switching apparatus and method
摘要
申请公布号	GB2253977(B)	申请公布日期	1995.04.26
申请号	GB19910024899	申请日期	1991.11.22
申请人	* AMERICAN TELEPHONE AND TELEGRAPH COMPANY;* AT&T CORP.	发明人	RICHARD HENRY * ERVING;ROBERT RAYMOND * MILLER
分类号	H04M1/60;H04M9/08;(IPC1-7):H04B3/20	主分类号	H04M1/60
代理机构		代理人
主权项
地址

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