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发明名称
Variable display sign
摘要
申请公布号
GB2131218(A)
申请公布日期
1984.06.13
申请号
GB19830025722
申请日期
1983.09.26
申请人
* OLD SIGN SERVICES LIMITED
发明人
JOHN * ATKINSON
分类号
G09F7/00;G09F11/29;(IPC1-7):G09F11/18
主分类号
G09F7/00
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代理人
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