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发明名称
摘要
申请公布号
JPS5420143(U)
申请公布日期
1979.02.08
申请号
JP19770092866U
申请日期
1977.07.13
申请人
发明人
分类号
G03D13/00;G03C3/00;(IPC1-7):G03C3/00
主分类号
G03D13/00
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