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发明名称
Magnetic material
摘要
申请公布号
US1757178(A)
申请公布日期
1930.05.06
申请号
US19290352052
申请日期
1929.04.02
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
ELMEN GUSTAF W.
分类号
C22C19/03;C22C38/08
主分类号
C22C19/03
代理机构
代理人
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地址
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