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发明名称
Cathode chauffée indirectement pour tubes à décharges électriques
摘要
申请公布号
FR775737(A)
申请公布日期
1935.01.08
申请号
FRD775737
申请日期
1934.07.11
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J1/26
主分类号
H01J1/26
代理机构
代理人
主权项
地址
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