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发明名称
摘要
申请公布号
JPS448813(Y1)
申请公布日期
1969.04.10
申请号
JP19680094289U
申请日期
1968.10.29
申请人
发明人
分类号
G02B27/18;G02B27/00;G09F9/00;(IPC1-7):G02B27/00
主分类号
G02B27/18
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代理人
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