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发明名称
Elektronen-Entladungsvorrichtung, bei der eine virtuelle Kathode gebildet wird.
摘要
申请公布号
CH207787(A)
申请公布日期
1939.11.30
申请号
CHD207787
申请日期
1938.01.27
申请人
RADIO CORPORATION OF AMERICA
发明人
AMERICA RADIO CORPORATION OF
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
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地址
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