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发明名称
Electron discharge device
摘要
申请公布号
US2082851(A)
申请公布日期
1937.06.08
申请号
US19350018554
申请日期
1935.04.27
申请人
RADIO CORPORATION OF AMERICA
发明人
SMITH NEWELL R.
分类号
H01J7/18
主分类号
H01J7/18
代理机构
代理人
主权项
地址
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