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发明名称
LOOP TEST CIRCUIT
摘要
申请公布号
EP0123459(B1)
申请公布日期
1988.08.17
申请号
EP19840302247
申请日期
1984.04.02
申请人
NORTHERN TELECOM LIMITED
发明人
PHILLIPS, LOT;AUSTIN, HOLLIS BROWN;BLAKESLEE, KENNETH STEVEN
分类号
H04Q1/20;G01R19/165;H04M3/30;(IPC1-7):H04M3/30
主分类号
H04Q1/20
代理机构
代理人
主权项
地址
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