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发明名称
摘要
申请公布号
JPS6442574(U)
申请公布日期
1989.03.14
申请号
JP19870136888U
申请日期
1987.09.08
申请人
发明人
分类号
G11B7/24;G11B23/00;(IPC1-7):G11B23/00
主分类号
G11B7/24
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