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发明名称
Method of making magnetic data storage devices
摘要
申请公布号
US2877540(A)
申请公布日期
1959.03.17
申请号
US19570672277
申请日期
1957.07.16
申请人
THE NATIONAL CASH REGISTER COMPANY
发明人
AUSTEN HERMAN E.
分类号
C25D3/56;H01F10/00
主分类号
C25D3/56
代理机构
代理人
主权项
地址
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