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发明名称
THERMIONIC VALVE
摘要
申请公布号
CA565895(A)
申请公布日期
1958.11.11
申请号
CAD565895
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
GEORGE L. DAVIS;CHARLES H. R. GENTRY
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主分类号
代理机构
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