Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5988293 | Gauge structure for a cylinder operated depth control | Shane J. Brueggen, Robert Bennett, William Douglas Graham, Richard Hugo Clark | 1999-11-23 |
| 5724903 | Seed firming wheel support | Alfred Dean Yoder | 1998-03-10 |
| 5676073 | Closing wheels adjustment mechanism | Norman Robert Bergland | 1997-10-14 |