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发明名称
Improved method of and means for electromagnetic recording
摘要
申请公布号
GB771212(A)
申请公布日期
1957.03.27
申请号
GB19550022178
申请日期
1955.08.02
申请人
GENERAL ELECTRIC COMPANY
发明人
分类号
G11B5/02
主分类号
G11B5/02
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代理人
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