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发明名称
摘要
申请公布号
JPS5867310(U)
申请公布日期
1983.05.07
申请号
JP19810161850U
申请日期
1981.10.31
申请人
发明人
分类号
G02B7/198;G02B7/18;G02B27/62;(IPC1-7):G02B27/62
主分类号
G02B7/198
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