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发明名称
Electronic device
摘要
申请公布号
US2220452(A)
申请公布日期
1940.11.05
申请号
US19360117660
申请日期
1936.12.24
申请人
RADIO CORPORATION OF AMERICA
发明人
JARVIS KENNETH W.;BLAIR RUSSELL M.
分类号
H01J43/30
主分类号
H01J43/30
代理机构
代理人
主权项
地址
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