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发明名称
THERMIONIC CATHODE
摘要
申请公布号
CA482032(A)
申请公布日期
1952.03.25
申请号
CAD482032
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
ROBERT LOOSJES;ANTONIUS JOSEPHUS VAN GENUCHTEN
分类号
主分类号
代理机构
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