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经营范围
发明名称
Improvements in or relating to circuit arrangements including more particularly amplifying circuit arrangements comprising an impedance constituted by the input impedance of a low-pass or band-pass filter
摘要
申请公布号
GB664591(A)
申请公布日期
1952.01.09
申请号
GB19460016538
申请日期
1946.05.31
申请人
PHILIPS LAMPS LIMITED
发明人
分类号
H03F1/50;H03F3/189;H03H7/38
主分类号
H03F1/50
代理机构
代理人
主权项
地址
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