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发明名称
摘要
申请公布号
JPS523291(B1)
申请公布日期
1977.01.27
申请号
JP19710001940
申请日期
1971.01.22
申请人
发明人
分类号
G11B15/29;G11B23/07;(IPC1-7):G11B23/06
主分类号
G11B15/29
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代理人
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