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发明名称
Anordnung zur Einstellung der fuer eine Vierdraht-Fernsprechleitung zulaessigen Mindestdaempfung bei Zusammenschaltung von Vierdrahtleitungen mit oder ohne Endverstaerker
摘要
申请公布号
DE835161(C)
申请公布日期
1952.11.04
申请号
DE1950B002087
申请日期
1950.02.15
申请人
GOTTFRIED BAYER;DIPL.-ING. HANS NIEDERMAYR
发明人
BAYER GOTTFRIED;NIEDERMAYR DIPL.-ING. HANS
分类号
H04M3/40
主分类号
H04M3/40
代理机构
代理人
主权项
地址
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