Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800964 | Compact shank assembly with leaf spring | Vernon E. Rettig, Ronald M. Steilen | 1989-01-31 |
| 4700641 | Pivoting spring-cushioned press wheel gang assembly | Glenn D. Head, Jr. | 1987-10-20 |