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经营范围
发明名称
Electron beam amplifier and apparatus thereof
摘要
申请公布号
GB1001647(A)
申请公布日期
1965.08.18
申请号
GB19620022878
申请日期
1962.06.14
申请人
ZENITH RADIO CORPORATION
发明人
分类号
H01J25/49
主分类号
H01J25/49
代理机构
代理人
主权项
地址
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