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发明名称
Schaltungsweise für aus Wechselstromnetzen direkt geheizte Glühkathoden von Elektronenröhren.
摘要
申请公布号
AT122665(B)
申请公布日期
1931.05.11
申请号
ATD122665
申请日期
1929.10.10
申请人
AUDIONWERKE D. S. LOEWE GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG;BRUNO WIENECKE
发明人
分类号
主分类号
代理机构
代理人
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