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发明名称
Direkt geheizte bandfoermige Kathode fuer Entladungsroehren
摘要
申请公布号
DE751158(C)
申请公布日期
1952.10.06
申请号
DE1938R101175D
申请日期
1938.01.01
申请人
RADIO CORPORATION OF AMERICA
发明人
SMITH NEWELL RALPH
分类号
H01J1/16
主分类号
H01J1/16
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