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发明名称
Filament tensioning means for electron discharge devices
摘要
申请公布号
GB706490(A)
申请公布日期
1954.03.31
申请号
GB19510001985
申请日期
1951.01.25
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
CARLSTRUM THURE HENRY
分类号
H01J1/18
主分类号
H01J1/18
代理机构
代理人
主权项
地址
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