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发明名称
Verfahren zur Herstellung einer indirekt heizbaren Oxydkathode für Elektronenröhren
摘要
申请公布号
AT228347(B)
申请公布日期
1963.07.10
申请号
AT19610009374
申请日期
1961.12.12
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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