Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11835162 | Bearing rotary swivel joint | Stephen R. Frey, Kevin Witt, Daniel M. Olson, Keith F. Jacobs | 2023-12-05 |
| 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 |
| 10705517 | Equipment monitoring system | Roger W. Schreiber, Daniel M. Olson, Christopher J. Brimmer, Bernard M. Hengels | 2020-07-07 |
| 10659726 | System for inspecting pipelines utilizing a wireless device | Stephen R. Frey, Kevin Witt, Keith F. Jacobs, Richard D. Ohlendorf, Jacob E. Kaad | 2020-05-19 |
| 10638024 | Pole mounted lighted camera | Richard D. Ohlendorf, Jacob E. Kaad, Stephen R. Frey | 2020-04-28 |
| 8661643 | Portable hand operated hose fitting swaging device | Peter W. Utecht | 2014-03-04 |
| 8522414 | Portable hand operated hose fitting swaging device | Peter W. Utecht | 2013-09-03 |
| 7921560 | Method of forming a large diameter extruded pipe | Peter W. Utecht | 2011-04-12 |
| 6895670 | Method of attaching a self-aligning flange to a vacuum pipe and forming a large diameter extruded pipe | Peter W. Utecht | 2005-05-24 |