Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6142085 | Hydraulic compression system for seeder | James W. Halford, Derek Christopher Opseth, William Robin Nell | 2000-11-07 |
| 4658911 | Flexible frames for wide swath agricultural implements | Robert G. Purton | 1987-04-21 |