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发明名称
Kathode für eine elektrische Entladungsröhre
摘要
申请公布号
CH319033(A)
申请公布日期
1957.01.31
申请号
CHD319033
申请日期
1954.02.15
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
PAUL COPPOLA,PATRICK;FERRY,DOBBS;COLLIER HUGHES,RAY
分类号
H01J1/28
主分类号
H01J1/28
代理机构
代理人
主权项
地址
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