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发明名称
Schaltungsanordnung fuer Fernsprechwaehleraemter, bei welcher zweiadrige Verbindungsleitungen durch dreiadrig eingerichtete Waehler ausgewaehlt werden
摘要
申请公布号
DE575916(C)
申请公布日期
1933.05.09
申请号
DE1927M099608D
申请日期
1927.05.06
申请人
FRIEDRICH MERK
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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