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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb
摘要
申请公布号
DE493210(C)
申请公布日期
1930.03.08
申请号
DE1927A051994D
申请日期
1927.09.22
申请人
AUTOMATIC ELECTRIC 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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