发明名称 |
Changeable sign on a rear of a vehicle |
摘要 |
The invention is directed to an electronic message unit that is mounted at the rear of a vehicle that will display messages directed to a driver behind the vehicle. The messages displayed on the message unit are controlled by the driver of the vehicle in front.
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申请公布号 |
US2004226204(A1) |
申请公布日期 |
2004.11.18 |
申请号 |
US20030434732 |
申请日期 |
2003.05.12 |
申请人 |
GREEN RANDY |
发明人 |
GREEN RANDY |
分类号 |
G09F21/04;(IPC1-7):G09F21/04 |
主分类号 |
G09F21/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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