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发明名称
ELECTRON DISCHARGE DEVICE
摘要
申请公布号
CA396990(A)
申请公布日期
1941.06.03
申请号
CAD396990
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN;RADIO CORPORATION OF AMERICA
发明人
JOHAN LODEWIJK HENDRIK JONKER
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主分类号
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