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发明名称
Electron discharge device
摘要
申请公布号
US2462496(A)
申请公布日期
1949.02.22
申请号
US19420440283
申请日期
1942.04.24
申请人
RADIO CORPORATION OF AMERICA
发明人
HEROLD EDWARD W.
分类号
H01J25/78
主分类号
H01J25/78
代理机构
代理人
主权项
地址
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