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发明名称
Improvements in or relating to electron velocity modulation discharge tubes
摘要
申请公布号
GB549795(A)
申请公布日期
1942.12.07
申请号
GB19410006933
申请日期
1941.05.30
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01J25/12
主分类号
H01J25/12
代理机构
代理人
主权项
地址
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