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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb und mehreren Vermittlungsstellen
摘要
申请公布号
DE604054(C)
申请公布日期
1934.10.13
申请号
DE1931S101422D
申请日期
1931.10.17
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
KEYSER ALFRED
分类号
H04M7/10;H04Q3/00
主分类号
H04M7/10
代理机构
代理人
主权项
地址
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