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发明名称
Improvements in and relating to amplifying systems
摘要
申请公布号
GB357572(A)
申请公布日期
1931.09.24
申请号
GB19300019260
申请日期
1930.06.24
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
发明人
分类号
H01J40/14;H03F3/02
主分类号
H01J40/14
代理机构
代理人
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