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发明名称
摘要
申请公布号
JPS4714911(U)
申请公布日期
1972.10.21
申请号
JP19710019560U
申请日期
1971.03.20
申请人
发明人
分类号
G11B15/07;G11B15/02;(IPC1-7):G11B15/02
主分类号
G11B15/07
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代理人
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