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发明名称
Schaltungsanordnung zum Dienstfernsprechen zwischen Haupt- und Zwischenstationen einer Fernmeldestrecke
摘要
申请公布号
DE875217(C)
申请公布日期
1953.04.30
申请号
DE1951F006747
申请日期
1951.07.15
申请人
FELTEN & GUILLEAUME CARLSWERK AKTIENGESELLSCHAFT
发明人
FREYTAG HEINZ DIPL.-ING.
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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