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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0354439 (1982-03-03) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 15 인용 특허 : 3 |
A portable apparatus for warning drivers of temporary and/or hazardous road conditions ahead comprising a portable flat mat of resilient material which is either removably or permanently secured to the road surface in or near the path of an oncoming vehicle, and which has a plurality of equidistantl
A portable warning device in combination with a road having surface material thereon and multi-wheeled vehicles, wherein the portable warning device serves as an auxiliary surface, and is adapted for removeable securement to said surface material that serves as a primary surface to forewarn a driver
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