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发明名称
Improvements in supporting and tensioning arrangements for thermionic filament cathodes
摘要
申请公布号
GB515125(A)
申请公布日期
1939.11.27
申请号
GB19380017053
申请日期
1938.06.08
申请人
JOHN MATHIESON DODDS;METROPOLITAN - VICKERS ELECTRICAL COMPANY LIMITED
发明人
分类号
H01J1/18
主分类号
H01J1/18
代理机构
代理人
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