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发明名称
Screen grid tube
摘要
申请公布号
US1873026(A)
申请公布日期
1932.08.23
申请号
US19280327205
申请日期
1928.12.20
申请人
RADIO CORPORATION OF AMERICA
发明人
PETERSON HAROLD O.
分类号
H01J21/02
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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