Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11090671 | Automatic reversible arc sprinkler | Mathew L. Zimmerman, Craig B. Nelson, Joseph Daniel Sinden | 2021-08-17 |
| 11085568 | Center pivot irrigation gooseneck with varying cross-sectional diameters | Craig B. Nelson, Reid A. Nelson, Riley D. Greenwood, Michael Townsend | 2021-08-10 |
| 11002394 | Quick connect joint | Mathew L. Zimmerman, Craig B. Nelson, Joseph Daniel Sinden | 2021-05-11 |