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发明名称
摘要
申请公布号
JPS63125810(U)
申请公布日期
1988.08.17
申请号
JP19870018409U
申请日期
1987.02.10
申请人
发明人
分类号
G02B23/20;(IPC1-7):G02B23/20
主分类号
G02B23/20
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