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发明名称
Improvements in and relating to amplifying systems
摘要
申请公布号
GB502881(A)
申请公布日期
1939.03.27
申请号
GB19370017046
申请日期
1937.06.18
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
发明人
分类号
G01R1/28
主分类号
G01R1/28
代理机构
代理人
主权项
地址
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