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发明名称
MAGNETIC RECORDING METHOD
摘要
申请公布号
CA686851(A)
申请公布日期
1964.05.19
申请号
CAD686851
申请日期
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
RICHARD C. COWDEN
分类号
主分类号
代理机构
代理人
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