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发明名称
Schaltungsanordnung fuer nebengeraeuschfreie Teilnehmerstationen in Fernsprechanlagen mit Waehlerbetrieb, deren Sprechtransformatoren mehrere Wicklungen besitzen
摘要
申请公布号
DE583007(C)
申请公布日期
1933.08.26
申请号
DE1926A049041D
申请日期
1926.10.24
申请人
AUTOMATIC ELECTRIC INC.
发明人
分类号
H04M1/58;H04M1/74
主分类号
H04M1/58
代理机构
代理人
主权项
地址
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