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经营范围
发明名称
Improvements in or relating to arrangements for amplifying or generating electrical oscillations of very high frequency
摘要
申请公布号
GB552700(A)
申请公布日期
1943.04.20
申请号
GB19410015945
申请日期
1941.12.10
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J19/80
主分类号
H01J19/80
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代理人
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