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经营范围
发明名称
Computer controlled adaptive speakerphone.
摘要
申请公布号
EP0376582(B1)
申请公布日期
1994.06.15
申请号
EP19890313269
申请日期
1989.12.19
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
ERVING, RICHARD HENRY;FORD, WILLIAM ALBERT;MILLER, ROBERT RAYMOND II
分类号
H04M1/19;H04M1/60;H04M9/08;(IPC1-7):H04M9/08
主分类号
H04M1/19
代理机构
代理人
主权项
地址
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