Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12292122 | Bypass strainer valve assembly and method | — | 2025-05-06 |
| 10512866 | Filter housing for filter fan | Seng Chang, Douglas L. Neuenfeldt, Jeffrey Thibedeau, William J. Nepsha, Michael Koehler +3 more | 2019-12-24 |
| D803365 | Air conditioner | Douglas L. Neuenfeldt, Michael Koehler, Randal Schroeder, William J. Nepsha, Adam Pawlowski +2 more | 2017-11-21 |
| D739928 | Air conditioner cover | Douglas L. Neuenfeldt, Michael Koehler, Randal Schroeder, William J. Nepsha, Klaus-Peter Bachmann +2 more | 2015-09-29 |