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发明名称
IMPROVEMENTS RELATING TO CHANGEABLE DOT DISPLAY ASSEMBLIES
摘要
申请公布号
GB8812730(D0)
申请公布日期
1988.06.29
申请号
GB19880012730
申请日期
1988.05.27
申请人
A/S DESIGNS INC
发明人
分类号
G09F9/37
主分类号
G09F9/37
代理机构
代理人
主权项
地址
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