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发明名称
Magnetic device
摘要
申请公布号
US2277057(A)
申请公布日期
1942.03.24
申请号
US19400320615
申请日期
1940.02.24
申请人
BACH JESSE M
发明人
BACH JESSE M.
分类号
A63F7/40;A63F9/34;H01F7/02
主分类号
A63F7/40
代理机构
代理人
主权项
地址
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