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发明名称
Improvements relating to vacuum tubes
摘要
申请公布号
GB583179(A)
申请公布日期
1946.12.11
申请号
GB19430018435
申请日期
1943.11.05
申请人
STANDARD TELEPHONES AND CABLES LIMITED;WILLIAM THOMAS GIBSON;WALTER WARWICK MARSH
发明人
分类号
H01J5/20;H01J19/34
主分类号
H01J5/20
代理机构
代理人
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