Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10225972 | Winged chisel | Rodney L. Hagman | 2019-03-12 |
| 6880644 | Deep tillage ripper with independent, spring-mounted closing wheels | Rodney L. Hagman | 2005-04-19 |
| 4750441 | Furrow opening assembly | Billy J. Pfenninger | 1988-06-14 |
| 4660651 | Highly flexible, foldable drill for uniform depth seed deposit | Billy J. Pfenninger, David R. Smith | 1987-04-28 |