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经营范围
发明名称
Improvements in or relating to circuit arrangements for smoothing a direct current ripple
摘要
申请公布号
GB335733(A)
申请公布日期
1930.10.02
申请号
GB19290028842
申请日期
1929.09.23
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H02M1/14
主分类号
H02M1/14
代理机构
代理人
主权项
地址
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