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经营范围
发明名称
Improvements in thermionic valves adapted for operation at very high frequencies
摘要
申请公布号
GB525378(A)
申请公布日期
1940.08.27
申请号
GB19390005600
申请日期
1939.02.20
申请人
THE M-O VALVE COMPANY LIMITED;MALCOLM ROSS GAVIN
发明人
分类号
H01J25/00
主分类号
H01J25/00
代理机构
代理人
主权项
地址
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