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发明名称
INDIRECTLY HEATED THERMIONIC CATHODE AND METHOD OF MANUFACTURING SUCH A CATHODE
摘要
申请公布号
CA874602(A)
申请公布日期
1971.06.29
申请号
CAD874602
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
JOHANNES R. BLATTER
分类号
主分类号
代理机构
代理人
主权项
地址
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