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发明名称
Power conversion device of the vacuum tube type
摘要
申请公布号
US2579374(A)
申请公布日期
1951.12.18
申请号
US19470734965
申请日期
1947.03.15
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
EDWARDS DONALD V.
分类号
H02M7/44
主分类号
H02M7/44
代理机构
代理人
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地址
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