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发明名称
Method for asymmetrically attenuating signals in a transmission system
摘要
申请公布号
EP0821527(A3)
申请公布日期
1999.07.14
申请号
EP19970112093
申请日期
1997.07.15
申请人
AT&T CORP.
发明人
DAIL, JAMES E.
分类号
H04B3/14;H04H20/38;H04H20/77;H04N7/14;H04N7/22;(IPC1-7):H04N7/14;H04H1/02
主分类号
H04B3/14
代理机构
代理人
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