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发明名称
Improvements in electric valve converting apparatus
摘要
申请公布号
GB503592(A)
申请公布日期
1939.04.11
申请号
GB19370019021
申请日期
1937.07.08
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED
发明人
分类号
H02M1/00
主分类号
H02M1/00
代理机构
代理人
主权项
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