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发明名称
Schaltungsanordnung zur Mithoer- und Mitsprechanschaltung einer Vermittlungsperson an Vierdraht-/Vierdraht-Durchgangsverbindungen
摘要
申请公布号
DE1166286(B)
申请公布日期
1964.03.26
申请号
DE1962S080156
申请日期
1962.06.29
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
VOGT ALOIS;BIRKL ALOIS
分类号
H04M3/56;H04M7/10
主分类号
H04M3/56
代理机构
代理人
主权项
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