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发明名称
Ring Link Display System
摘要
申请公布号
GB2013479(A)
申请公布日期
1979.08.15
申请号
GB19790002837
申请日期
1979.01.26
申请人
POST OFFICE
发明人
分类号
A47F5/10;G09F15/00;(IPC1-7):G09F15/00
主分类号
A47F5/10
代理机构
代理人
主权项
地址
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