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发明名称
Elektrische Entladungsröhre.
摘要
申请公布号
CH152071(A)
申请公布日期
1932.01.15
申请号
CHD152071
申请日期
1930.07.18
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号
主分类号
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