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经营范围
发明名称
HIGH FREQUENCY AMPLIFICATION APPARATUS
摘要
申请公布号
GB8909124(D0)
申请公布日期
1989.06.07
申请号
GB19890009124
申请日期
1989.04.21
申请人
EEV LIMITED
发明人
分类号
H01J23/207
主分类号
H01J23/207
代理机构
代理人
主权项
地址
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