Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7581735 | Skateboard ski with spring suspension | Eric Hansen, David M. Shipley | 2009-09-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7581735 | Skateboard ski with spring suspension | Eric Hansen, David M. Shipley | 2009-09-01 |