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发明名称
Electron lens
摘要
申请公布号
GB564003(A)
申请公布日期
1944.09.08
申请号
GB19430006584
申请日期
1943.04.30
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01J29/62
主分类号
H01J29/62
代理机构
代理人
主权项
地址
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