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发明名称
Schaltungsanordnung fuer die Rufuebertragung in Fernsprechaemtern
摘要
申请公布号
DE706138(C)
申请公布日期
1941.05.19
申请号
DE1938T050884D
申请日期
1938.08.21
申请人
TELEPHON-APPARAT-FABRIK E. ZWIETUSCH & CO. G.M.B.H.
发明人
OHLENDORF DIPL.-ING. HEINRICH;SEIDEL WILLI
分类号
H04M5/08
主分类号
H04M5/08
代理机构
代理人
主权项
地址
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