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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0517152 (1974-10-23) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 13 인용 특허 : 0 |
A sled for use on snow, grass, sand, and the like, as well as on water. The sled has a body with a relatively sharply upswept prow which projects well above the rear end of the body and slopes upwardly in each lateral direction from a lower central keel rib on the body. The sled is towed by a line a
A sled comprising: a body having front and rear ends, said body having an undersurface which slopes upwardly in each lateral direction from its longitudinal centerline and longitudinal edges whose forward portions curve inwardly toward and merge at said centerline to provide said body with a rounded
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