Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8814474 | Low deflection drainage tile plow | — | 2014-08-26 |
| 8352131 | Drainage plow control and method of controlling an elevation of a cutting edge of a drainage plow | James D. Yegerlehner | 2013-01-08 |
| 8090507 | Pitch plow and method of controlling an elevation of a cutting edge of a pitch plow | James D. Yegerlehner | 2012-01-03 |
| 4928774 | Cultivator with improved disc positioning means | — | 1990-05-29 |