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经营范围
发明名称
Low noise electron gun
摘要
申请公布号
GB854943(A)
申请公布日期
1960.11.23
申请号
GB19580040592
申请日期
1958.12.16
申请人
HUGHES AIRCRAFT COMPANY
发明人
分类号
H01J23/075
主分类号
H01J23/075
代理机构
代理人
主权项
地址
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