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发明名称
摘要
申请公布号
JPS57177271(U)
申请公布日期
1982.11.09
申请号
JP19810062140U
申请日期
1981.04.28
申请人
发明人
分类号
G11B3/54;G11B3/52;G11B21/12;(IPC1-7):G11B21/12
主分类号
G11B3/54
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代理人
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