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发明名称
Improvements in or relating to the manufacture of vacuum tubes
摘要
申请公布号
GB587832(A)
申请公布日期
1947.05.07
申请号
GB19450001579
申请日期
1945.01.19
申请人
KOLSTER-BRANDES LIMITED;LESLIE GEORGE CHAFFEY
发明人
分类号
H01J5/58
主分类号
H01J5/58
代理机构
代理人
主权项
地址
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