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发明名称
Grid electrode
摘要
申请公布号
US2171225(A)
申请公布日期
1939.08.29
申请号
US19370177368
申请日期
1937.11.30
申请人
RADIO CORPORATION OF AMERICA
发明人
SCHADE OTTO H.
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
主权项
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