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发明名称
Improvements in thermionic amplifiers
摘要
申请公布号
GB367511(A)
申请公布日期
1932.02.25
申请号
GB19310000590
申请日期
1931.01.07
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H03F1/36;H03F1/40
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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