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发明名称
摘要
申请公布号
JPS5571337(U)
申请公布日期
1980.05.16
申请号
JP19780154124U
申请日期
1978.11.10
申请人
发明人
分类号
G03B27/54;G03B27/50;G03G15/04;(IPC1-7):G03B27/54
主分类号
G03B27/54
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