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发明名称
Filament bifilaire pour cathodes de tubes thermoélectroniques et son procédé de fabrication
摘要
申请公布号
FR1162076(A)
申请公布日期
1958.09.09
申请号
FRD1162076
申请日期
1956.12.11
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J1/22
主分类号
H01J1/22
代理机构
代理人
主权项
地址
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