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发明名称
Variable-voltage transformer
摘要
申请公布号
US1752873(A)
申请公布日期
1930.04.01
申请号
US19280313106
申请日期
1928.10.17
申请人
GENERAL ELECTRIC COMPANY
发明人
ZELT ELMER J.
分类号
H01F29/02
主分类号
H01F29/02
代理机构
代理人
主权项
地址
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