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发明名称
摘要
申请公布号
JPS647507(Y2)
申请公布日期
1989.02.28
申请号
JP19810189902U
申请日期
1981.12.19
申请人
发明人
分类号
G11B33/12;G11B15/18;G11B23/00;G11B23/50;(IPC1-7):G11B23/50
主分类号
G11B33/12
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