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经营范围
发明名称
Tube électronique pour ondes courtes
摘要
申请公布号
FR1053427(A)
申请公布日期
1954.02.02
申请号
FRD1053427
申请日期
1952.04.04
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J21/36
主分类号
H01J21/36
代理机构
代理人
主权项
地址
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