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发明名称
摘要
申请公布号
JPS634217(Y2)
申请公布日期
1988.02.02
申请号
JP19800093561U
申请日期
1980.07.04
申请人
发明人
分类号
G03B27/20;G03B27/10;G03F7/24;(IPC1-7):G03F7/24
主分类号
G03B27/20
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