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发明名称
Schaltungsanordnung für Fernsprechanlagen mit Wählerbetrieb, insbesondere für Nebenstellenanlagen.
摘要
申请公布号
AT131508(B)
申请公布日期
1933.01.25
申请号
ATD131508
申请日期
1931.08.05
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
ING. HANS TATZL
分类号
H04M3/58
主分类号
H04M3/58
代理机构
代理人
主权项
地址
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