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发明名称
Tube à décharges à cathode équipotentielle
摘要
申请公布号
FR685990(A)
申请公布日期
1930.07.21
申请号
FRD685990
申请日期
1929.12.03
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J7/44
主分类号
H01J7/44
代理机构
代理人
主权项
地址
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