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经营范围
发明名称
Apparatus for use in isolating the cause of a dropped telecommunication call.
摘要
申请公布号
EP0681392(A3)
申请公布日期
1999.11.17
申请号
EP19950302825
申请日期
1995.04.26
申请人
AT&T CORP.
发明人
REGIS, HARRY J.;WHITE, CHARLES A.;VENER, AVRAM RUDY
分类号
H04M3/08;H04M3/22;H04M3/30;H04M3/36;(IPC1-7):H04M3/36
主分类号
H04M3/08
代理机构
代理人
主权项
地址
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