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发明名称
Improvements in and relating to electron lenses
摘要
申请公布号
GB561554(A)
申请公布日期
1944.05.24
申请号
GB19420013873
申请日期
1942.10.02
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED
发明人
分类号
H01J37/12
主分类号
H01J37/12
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代理人
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