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发明名称
DISPLAY DEVICE WITH PRICE CHANGE CARTRIDGES
摘要
申请公布号
GB2080995(B)
申请公布日期
1985.03.20
申请号
GB19810023870
申请日期
1981.08.05
申请人
MEAD THE CORP
发明人
分类号
G09F3/20;(IPC1-7):G09F11/29
主分类号
G09F3/20
代理机构
代理人
主权项
地址
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