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发明名称
Elektrische Entladungsroehre mit einer indirekt beheizbaren Kathode
摘要
申请公布号
DE890389(C)
申请公布日期
1953.09.17
申请号
DE1948P020749D
申请日期
1948.11.05
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
WEYER HENRICUS JOHANNES DE
分类号
H01J1/15;H01J1/20
主分类号
H01J1/15
代理机构
代理人
主权项
地址
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