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发明名称
CURRENT CONVERTING DEVICE
摘要
申请公布号
CA383585(A)
申请公布日期
1939.08.22
申请号
CAD383585
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
JOHAN WILLEM ALEXANDER
分类号
主分类号
代理机构
代理人
主权项
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