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发明名称
GERAET UND VERFAHREN ZUR FEHLERORTUNG BEI EINER FERNSPRECHLEITUNG
摘要
申请公布号
DE3426490(A1)
申请公布日期
1985.01.31
申请号
DE19843426490
申请日期
1984.07.18
申请人
AMERICAN TELEPHONE AND TELEGRAPH CO., NEW YORK, N.Y., US
发明人
BULLEY, RAYMOND MARK, WHIPPANY, N.J., US
分类号
H04M3/30;(IPC1-7):H04M3/30
主分类号
H04M3/30
代理机构
代理人
主权项
地址
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