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发明名称
Elektrisk Udladningsrør til Lysudstraaling.
摘要
申请公布号
DK56719(C)
申请公布日期
1939.09.25
申请号
DKD56719
申请日期
1938.06.04
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
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