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发明名称
摘要
申请公布号
JPS624905(Y2)
申请公布日期
1987.02.04
申请号
JP19800138253U
申请日期
1980.09.30
申请人
发明人
分类号
G02B7/28;G11B7/08;G11B7/085;(IPC1-7):G11B7/085
主分类号
G02B7/28
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