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发明名称
摘要
申请公布号
JPS595861(Y2)
申请公布日期
1984.02.22
申请号
JP19790165380U
申请日期
1979.11.28
申请人
发明人
分类号
G03B27/50;G03G15/04;(IPC1-7):G03B27/50
主分类号
G03B27/50
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