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发明名称
Elektrische Entladungsröhre mit einer mit Erdalkalimetalloxyd aktivierten Kathode.
摘要
申请公布号
CH289829(A)
申请公布日期
1953.03.31
申请号
CHD289829
申请日期
1950.10.09
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号
B66B9/193;H01J19/30
主分类号
B66B9/193
代理机构
代理人
主权项
地址
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