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发明名称
Improvements in and relating to thermionic power valves
摘要
申请公布号
GB476187(A)
申请公布日期
1937.12.03
申请号
GB19360017144
申请日期
1936.06.19
申请人
JOHN HEYWOOD LUDLOW;METROPOLITAN - VICKERS ELECTRICAL COMPANY LIMITED
发明人
分类号
H01J21/06
主分类号
H01J21/06
代理机构
代理人
主权项
地址
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