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发明名称
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摘要
申请公布号
US2676861(A)
申请公布日期
1954.04.27
申请号
US19510211703
申请日期
1951.02.19
申请人
HERRING-HALL-MARVIN
发明人
BELEW LELAND W.
分类号
G11B33/04
主分类号
G11B33/04
代理机构
代理人
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