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发明名称
摘要
申请公布号
JPS56139154(U)
申请公布日期
1981.10.21
申请号
JP19800037275U
申请日期
1980.03.24
申请人
发明人
分类号
G03F7/00;G03C5/00;G03F7/20;G03F7/40;(IPC1-7):G03F7/20
主分类号
G03F7/00
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