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发明名称
Wehnelt-cathode
摘要
申请公布号
US1821359(A)
申请公布日期
1931.09.01
申请号
US19290352597
申请日期
1929.04.04
申请人
RADIO CORPORATION OF AMERICA
发明人
REERINK ENGBERT HARMEN;MULDER JOHANNES GIJSBERTUS WILHELM
分类号
H01J1/14;H01J9/04
主分类号
H01J1/14
代理机构
代理人
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地址
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