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经营范围
发明名称
Improvements in or relating to thermionic valve circuits
摘要
申请公布号
GB655833(A)
申请公布日期
1951.08.01
申请号
GB19480030945
申请日期
1948.11.29
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;ROY FRANK PRIVETT
发明人
分类号
H03F1/50
主分类号
H03F1/50
代理机构
代理人
主权项
地址
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