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发明名称
Transformer
摘要
申请公布号
US1784030(A)
申请公布日期
1930.12.09
申请号
US19280303039
申请日期
1928.08.30
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
SORENSEN ANDREW J.
分类号
H02P9/32
主分类号
H02P9/32
代理机构
代理人
主权项
地址
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