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发明名称
Schaltungsanordnung fuer Fernsprechanlagen,insbesondere Fernsprechsonderanlagen,zur Auswertung unterschiedlicher Berechtigungskriterien zwecks Verhinderung von Verbindungsdurchschaltungen
摘要
申请公布号
DE2705923(B1)
申请公布日期
1978.04.13
申请号
DE19772705923
申请日期
1977.02.09
申请人
SIEMENS AG, 1000 BERLIN UND 8000 MUENCHEN
发明人
DUESING, HANS-JOACHIM, DIPL.-ING., 1000 BERLIN
分类号
H04M3/38;H04Q3/00;(IPC1-7):H04M3/38;H04M3/42
主分类号
H04M3/38
代理机构
代理人
主权项
地址
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