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发明名称
摘要
申请公布号
JP2523438(Y2)
申请公布日期
1997.01.22
申请号
JP19870181980U
申请日期
1987.11.30
申请人
发明人
分类号
G02B7/02;(IPC1-7):G02B7/02
主分类号
G02B7/02
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