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发明名称
Hand held electronic pedestrian crossing sign
摘要
申请公布号
GB9700295(D0)
申请公布日期
1997.02.26
申请号
GB19970000295
申请日期
1997.01.03
申请人
MARSON, DAVID S P
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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