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发明名称
EINRICHTUNG ZUR REALISIERUNG DER FREISPRECHFUNKTION IN EINEM FERNSPRECHAPPARAT MIT ASSOZIIERUNG DER VERSTAERKUNGSSCHALTUNGS- UND ECHOANNULLIERUNGS-FUNKTIONEN.
摘要
申请公布号
DE3877384(D1)
申请公布日期
1993.02.25
申请号
DE19883877384
申请日期
1988.02.29
申请人
FRANCE TELECOM, PARIS, FR
发明人
CONNAN, JEAN-LOUIS, F-22560 TREBEURDEN, FR;HUIBAN, JEAN-YVES;PINAUD, SERGE, F-22300 LANNION, FR
分类号
H04M1/60;H04B3/20;H04B3/23;H04M9/08;(IPC1-7):H04M9/08
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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