Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10462959 | Seed furrow closing wheel | Derek Litchfield, Derek W. Allensworth | 2019-11-05 |
| 10383274 | Paddle closing wheel | James D. Lascelles, Carl A. Woodside | 2019-08-20 |
| 10322810 | In-flight leveling system | Dale Drew | 2019-06-18 |
| 9884684 | In-flight leveling system | Dale Drew | 2018-02-06 |
| 9861029 | Paddle sealer | James D. Lascelles, Carl A. Woodside | 2018-01-09 |
| D801396 | Seed furrow closing wheel | Derek Litchfield, Derek W. Allensworth | 2017-10-31 |
| 9681599 | Paddle closing wheel | James D. Lascelles, Carl A. Woodside | 2017-06-20 |
| 9351438 | Paddle sealer | James D. Lascelles, Carl A. Woodside | 2016-05-31 |
| D718345 | Crop debris clearing disc | — | 2014-11-25 |
| 8752642 | Implement height adjuster | Derek Litchfield, Derek W. Allensworth | 2014-06-17 |
| 7832345 | Crop debris clearing device | Stephen E. Cerven, Derek Litchfield | 2010-11-16 |
| 7240627 | Crop debris clearing device | Stephen E. Cerven, Derek Litchfield | 2007-07-10 |
| 6006684 | Mount for agricultural additive conduit | Bernard F. Whalen, Ronald E. Chenoweth | 1999-12-28 |
| 5887664 | Adjustable depth control mechanism for earth-penetrating disk | Ronald E. Chenoweth | 1999-03-30 |
| 5190112 | Rotary hoe extension | Mark A. Johnston | 1993-03-02 |
| D269182 | Row crop cultivator frame | Bernard F. Whalen, Marvin C. Kerber | 1983-05-31 |