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发明名称
摘要
申请公布号
JPS52156514(U)
申请公布日期
1977.11.28
申请号
JP19770061159U
申请日期
1977.05.12
申请人
发明人
分类号
G11B15/52;G11B15/46;(IPC1-7):G11B15/46
主分类号
G11B15/52
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