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发明名称
Fernmeldekabel für Vierdrahtbetrieb, insbesondere für Trägerfrequenz-Vierdrahtbetrieb.
摘要
申请公布号
AT143793(B)
申请公布日期
1935.11.25
申请号
ATD143793
申请日期
1934.08.20
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
ERNST FISCHER
分类号
主分类号
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