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发明名称
摘要
申请公布号
JPS57201669(U)
申请公布日期
1982.12.22
申请号
JP19810087384U
申请日期
1981.06.16
申请人
发明人
分类号
G11B23/033;G11B23/02;(IPC1-7):G11B23/02
主分类号
G11B23/033
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