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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Haupt- und Untervermittlungsstellen und Waehlerbetrieb
摘要
申请公布号
DE658550(C)
申请公布日期
1938.04.07
申请号
DE1932S122664D
申请日期
1932.05.11
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
分类号
H04M15/10
主分类号
H04M15/10
代理机构
代理人
主权项
地址
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