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发明名称
Verfahren zur Herstellung einer Kathode fuer elektrische Entladungsroehren
摘要
申请公布号
DE974888(C)
申请公布日期
1961.05.25
申请号
DE1953N006922
申请日期
1953.03.22
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
ELENBAAS WILLEM;LOOSJES ROBERT
分类号
H01J1/142;H01J9/04
主分类号
H01J1/142
代理机构
代理人
主权项
地址
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