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发明名称
Tube à décharges électriques
摘要
申请公布号
FR686414(A)
申请公布日期
1930.07.25
申请号
FRD686414
申请日期
1929.12.10
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J7/18
主分类号
H01J7/18
代理机构
代理人
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