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发明名称
Elektrische Entladungsröhre.
摘要
申请公布号
CH144422(A)
申请公布日期
1930.12.31
申请号
CHD144422
申请日期
1930.02.18
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号
主分类号
代理机构
代理人
主权项
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