Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11760171 | Three stage air purification for rail vehicles | Richard B. Stelmach, Tyler Bowie | 2023-09-19 |
| 11046153 | Three stage air purification for rail vehicles | Richard B. Stelmach, Tyler Bowie | 2021-06-29 |