Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5787992 | Spring tip shank assembly having quick-dropping trip-out force and improved resetting ability | David Dobson | 1998-08-04 |
| 4850435 | Cultivator sweep with pair of rearwardly extending downturned rigid flaps | George H. Morris, Donald M. Michalchuk | 1989-07-25 |