Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8915503 | Snowmobile skis having elongated wing members | Allen Roberts | 2014-12-23 |
| 7841089 | Methods of manufacturing snowmobile skis | Allen Roberts | 2010-11-30 |
| 7311165 | Snowmobile ski | Allen Roberts | 2007-12-25 |
| 7311166 | Snowmobile ski | Allen Roberts | 2007-12-25 |
| 6991056 | Snowmobile ski | Allen Roberts | 2006-01-31 |
| 6955236 | Snowmobile ski | Allen Roberts | 2005-10-18 |
| 5967286 | Adjustable driven clutch | Allen Roberts, Robert Warbrick | 1999-10-19 |