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发明名称
Einrichtung zur UEberwachung der Betriebsbereitschaft einer mit einer oder mehreren Elektronenroehren ausgeruesteten Anordnung
摘要
申请公布号
DE605698(C)
申请公布日期
1934.11.16
申请号
DED605698D
申请日期
1930.02.18
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
ETZRODT DR. KARL
分类号
H03F1/54
主分类号
H03F1/54
代理机构
代理人
主权项
地址
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