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发明名称
Electron discharge tube
摘要
申请公布号
US2032781(A)
申请公布日期
1936.03.03
申请号
US19320641367
申请日期
1932.11.05
申请人
RADIO CORPORATION OF AMERICA
发明人
MARK JAN VAN DER
分类号
H01J21/20
主分类号
H01J21/20
代理机构
代理人
主权项
地址
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