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发明名称
Improvements in and relating to electric valve circuits
摘要
申请公布号
GB499280(A)
申请公布日期
1939.01.20
申请号
GB19380017943
申请日期
1938.06.16
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
发明人
分类号
H02M1/02
主分类号
H02M1/02
代理机构
代理人
主权项
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