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发明名称
Polyphase transformer system
摘要
申请公布号
US2790131(A)
申请公布日期
1957.04.23
申请号
US19550503376
申请日期
1955.04.25
申请人
EINARD NYYSSONEN
发明人
NYYSSONEN EINARD
分类号
H01F30/14
主分类号
H01F30/14
代理机构
代理人
主权项
地址
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