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发明名称
Tube à décharges électriques
摘要
申请公布号
FR837705(A)
申请公布日期
1939.02.20
申请号
FRD837705
申请日期
1938.05.07
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J21/12
主分类号
H01J21/12
代理机构
代理人
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地址
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