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发明名称
Perfectionnements apportés aux tubes à décharges électriques à anode refroidie
摘要
申请公布号
FR882925(A)
申请公布日期
1943.06.18
申请号
FRD882925
申请日期
1942.06.05
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J19/30
主分类号
H01J19/30
代理机构
代理人
主权项
地址
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