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发明名称
CIRCUIT FOR DERIVING A CONTROL SIGNAL TO PERMIT OR TO BLOCK THE EMISSION OF TONES BY A TONE CELL CIRCUIT FOR TELECOMMUNICATION SYSTEMS
摘要
申请公布号
EP0052835(B1)
申请公布日期
1985.02.13
申请号
EP19810109639
申请日期
1981.11.12
申请人
LICENTIA PATENT-VERWALTUNGS-GMBH
发明人
BECK, FRANZ, DR.-ING.;BERGMANN, GUNTHER, DR.-ING.;RALL, BERNHARD, DIPL.-ING.
分类号
H04M19/04;(IPC1-7):H04M19/04
主分类号
H04M19/04
代理机构
代理人
主权项
地址
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