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发明名称
Electrical phase shifting
摘要
申请公布号
US2288628(A)
申请公布日期
1942.07.07
申请号
US19390258520
申请日期
1939.02.25
申请人
LEE FREDERICK W
发明人
LEE FREDERICK W.
分类号
H01F29/12
主分类号
H01F29/12
代理机构
代理人
主权项
地址
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