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经营范围
发明名称
Improvements in rejector circuits for electrical apparatus having high or ultra-high frequencies
摘要
申请公布号
GB488081(A)
申请公布日期
1938.06.30
申请号
GB19370031057
申请日期
1937.11.11
申请人
VALDEMAR POULSEN;DANIEL PAUL LOUIS GRETHER
发明人
分类号
H03H1/00
主分类号
H03H1/00
代理机构
代理人
主权项
地址
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