Issued Patents 2023
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11617980 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Jayant Chakravarty, Gene B. Portelli, Dennis M. Glass +5 more | 2023-04-04 |
| 11607635 | Air filter condition sensing | Jonathan B. Arthur, Karl W. Bloedorn, Jayant Chakravarty, Gene B. Portelli, Dennis M. Glass +5 more | 2023-03-21 |
| D978443 | Hearing protector | Gregory G. Jager, Douglas D. Fletcher, Jason T. Lunn, Eric O. Hemberg, Anders Hellberg +1 more | 2023-02-14 |