Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11118711 | Rotary swivel joint | Stephen R. Frey, Kevin Witt, Daniel M. Olson | 2021-09-14 |
| D914069 | Hose swaging machine cart | Daniel M. Olson, Bernard M. Hengels, Kevin Witt, Jack V. Roberts, Charles S. Duginski +4 more | 2021-03-23 |
| 10947715 | Root cutter collar with quick changing skids | Stephen R. Frey, Kevin Witt | 2021-03-16 |