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发明名称
Elektrisk Udladningsrør med en Sekundæremissionselektrode.
摘要
申请公布号
DK66090(C)
申请公布日期
1947.12.22
申请号
DK19410000020
申请日期
1941.01.03
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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地址
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