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发明名称
Wide frequency-range magnetic recording and reproducing system
摘要
申请公布号
US2629784(A)
申请公布日期
1953.02.24
申请号
US19450573235
申请日期
1945.01.17
申请人
DANIELS FRED B
发明人
DANIELS FRED B.
分类号
G11B5/02
主分类号
G11B5/02
代理机构
代理人
主权项
地址
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