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发明名称
MAGNETIC RECORDING METHOD AND APPARATUS
摘要
申请公布号
GB1273260(A)
申请公布日期
1972.05.03
申请号
GB19690061992
申请日期
1969.12.19
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
G11B5/09;G11B20/10
主分类号
G11B5/09
代理机构
代理人
主权项
地址
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