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发明名称
Tubes à décharges électriques
摘要
申请公布号
FR824521(A)
申请公布日期
1938.02.10
申请号
FRD824521
申请日期
1937.07.19
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03F1/33
主分类号
H03F1/33
代理机构
代理人
主权项
地址
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