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发明名称
摘要
申请公布号
JPS565115(U)
申请公布日期
1981.01.17
申请号
JP19790068923U
申请日期
1979.05.24
申请人
发明人
分类号
G03B35/00;G02B27/22;(IPC1-7):G02B27/22
主分类号
G03B35/00
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