Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11154880 | Nutating sprinkler head | Don Duffin, Roger Duffin | 2021-10-26 |
| 11045822 | Speed controlled nutating sprinkler | Don Duffin, Roger Duffin | 2021-06-29 |
| 11045824 | Nozzle assembly with rotating nozzle insert | Don Duffin, Roger Duffin | 2021-06-29 |