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发明名称
ELECTRONICALLY PROGRAMMABLE DISPLAY DEVICES
摘要
<p>Electronic displays are provided having information for reading, the information being changeable in response to a control function to display other information, the information being maintained once changed without power.</p>
申请公布号
WO1989006849(A1)
申请公布日期
1989.07.27
申请号
GB1989000066
申请日期
1989.01.23
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发明人
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