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经营范围
发明名称
Variable inductor
摘要
申请公布号
US2201453(A)
申请公布日期
1940.05.21
申请号
US19380228265
申请日期
1938.09.03
申请人
THE REECE BUTTON HOLE MACHINE COMPANY
发明人
PUTNAM JOHN P.
分类号
H01F21/04
主分类号
H01F21/04
代理机构
代理人
主权项
地址
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