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经营范围
发明名称
Enhanced guardrail
摘要
A guardrail comprising a rail and an electronic display mounted on the rail. The display may be integrated with a bar code or RFID reader and a voice-recognition module.
申请公布号
US7018129(B1)
申请公布日期
2006.03.28
申请号
US20030654824
申请日期
2003.09.04
申请人
HERWIN INC.
发明人
SMITH HARRY E.
分类号
G09F15/00
主分类号
G09F15/00
代理机构
代理人
主权项
地址
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