Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6896069 | Roll-over disk plow | — | 2005-05-24 |
| 4850777 | Quick-action fasteners | Ventura A. Lawrence | 1989-07-25 |
| 4764071 | Quick-action fasteners | Ventura A. Lawrence | 1988-08-16 |
| 4640367 | Roll-over disc plow | Charles G. Metcalf, Lawrence H. Silva | 1987-02-03 |