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发明名称
摘要
申请公布号
JPH055552(Y2)
申请公布日期
1993.02.15
申请号
JP19850146711U
申请日期
1985.09.27
申请人
发明人
分类号
G03B27/72;G03G15/04;G03G15/043;(IPC1-7):G03B27/72
主分类号
G03B27/72
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代理人
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