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发明名称
摘要
申请公布号
JPS6455903(U)
申请公布日期
1989.04.06
申请号
JP19870151181U
申请日期
1987.09.30
申请人
发明人
分类号
G02B6/00;G02B6/26;G02B6/38;(IPC1-7):G02B6/00
主分类号
G02B6/00
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代理人
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