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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb
摘要
申请公布号
DE489706(C)
申请公布日期
1930.01.22
申请号
DE192400A3363D
申请日期
1924.10.30
申请人
AUTOMATIC ELEKTRIC INC.
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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