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发明名称
Schaltungsanordnung zur Gespraechszeitueberwachung der Selbstwaehl-Fernverbindungen von Muenzfernsprechern
摘要
申请公布号
DE741232(C)
申请公布日期
1944.04.19
申请号
DE1940T053935D
申请日期
1940.06.29
申请人
TELEPHON-APPARAT-FABRIK E. ZWIETUSCH & CO. G.M.B.H.
发明人
ZSCHIESCHE DIPL.-ING. WERNER;APPELIUS DIPL.-ING. FRITZ;TOEPFER HERBERT
分类号
H04M17/02
主分类号
H04M17/02
代理机构
代理人
主权项
地址
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