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发明名称
Konferenzanordnung fuer Fernsprechanlagen zur Beseitigung von Echosignalen
摘要
申请公布号
DE1288159(B)
申请公布日期
1969.01.30
申请号
DE196600W2073
申请日期
1966.07.23
申请人
WESTERN ELEKTRIC COMPANY INC.
发明人
CLEMENT HOYLER, ROBERT;ANTHONY KOSCINSKI,;BENDER PERKINSON, WILLIAM
分类号
H04B3/20;H04M3/56;H04Q11/04;(IPC1-7):H04M3/56
主分类号
H04B3/20
代理机构
代理人
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