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发明名称
Electron collector
摘要
申请公布号
US2955225(A)
申请公布日期
1960.10.04
申请号
US19580732621
申请日期
1958.05.02
申请人
RADIO CORPORATION OF AMERICA
发明人
STERZER FRED
分类号
H01J23/027
主分类号
H01J23/027
代理机构
代理人
主权项
地址
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