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发明名称
Electric transformer
摘要
申请公布号
US1838280(A)
申请公布日期
1931.12.29
申请号
US19280290731
申请日期
1928.07.06
申请人
FERRANTI, LIMITED
发明人
NORRIS ERIC DOUGLAS TOBIAS
分类号
H01F27/28
主分类号
H01F27/28
代理机构
代理人
主权项
地址
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