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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb, in denen sich bevorzugte Sprechstellen auf bestehende Verbindungen aufschalten koennen
摘要
申请公布号
DE594889(C)
申请公布日期
1934.03.24
申请号
DE1929S095562D
申请日期
1929.12.12
申请人
SUEDDEUTSCHE APPARATE-FABRIK G.M.B.H.
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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