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发明名称
Improvements in or relating to electron discharge devices
摘要
申请公布号
GB588141(A)
申请公布日期
1947.05.15
申请号
GB19440008057
申请日期
1944.04.28
申请人
RAYTHEON MANUFACTURING COMPANY
发明人
分类号
H01J23/213
主分类号
H01J23/213
代理机构
代理人
主权项
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