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发明名称
摘要
申请公布号
JPS4911924(Y1)
申请公布日期
1974.03.23
申请号
JP19690077021U
申请日期
1969.08.15
申请人
发明人
分类号
G11B15/29;(IPC1-7):G11B15/29
主分类号
G11B15/29
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代理人
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