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经营范围
发明名称
Improvements in or relating to circuit arrangements for amplifying and separating two or more oscillations
摘要
申请公布号
GB545803(A)
申请公布日期
1942.06.15
申请号
GB19400010263
申请日期
1940.06.12
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H04N5/60
主分类号
H04N5/60
代理机构
代理人
主权项
地址
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