Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744316 | Furrow forming apparatus for a seed planter | Darlo E. Lienemann, Donald L. Ledermann | 1988-05-17 |
| 4519525 | Seed dispenser for planters | Edward L. Robinson, Jr. | 1985-05-28 |
| 4425857 | Lock-up mechanism for a planter row unit | Darlo E. Lienemann, Donald L. Ledermann | 1984-01-17 |