Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422511 | Hydraulic reset for tillage and seeding equipment | Ralph Sweet | 1983-12-27 |
| 4353423 | Hydraulic reset for tillage and seeding equipment | Ralph Sweet | 1982-10-12 |
| 4209067 | Draft control and tail beam device for ground working discer type agricultural implements and the like | Ralph Sweet | 1980-06-24 |