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发明名称
摘要
申请公布号
JPH07117613(B2)
申请公布日期
1995.12.18
申请号
JP19870317646
申请日期
1987.12.17
申请人
发明人
分类号
G02B6/30;G02B6/38;G02B6/42;(IPC1-7):G02B6/30
主分类号
G02B6/30
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代理人
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