Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10981099 | Expandable air filters | Glen O. Gregerson, Laura C. Chesnut, Stephen M. Sanocki, Zhiqun Zhang, Craig D. Thompson +1 more | 2021-04-20 |
| 10940416 | Air filter devices with gap sealing unit | Glen O. Gregerson, Thomas J. Herbrand, David J. Prince, Craig D. Thompson, Judd D. Olson | 2021-03-09 |