Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1057296 | Air supply attachment for a helmet | Benjamin A. Johnson, Paul A. Martinson, Garry J. Walker, David J. Schmidt | 2025-01-07 |
| 9358409 | Air filtration device | — | 2016-06-07 |
| 8667960 | Radial blower with shaped scroll profile | — | 2014-03-11 |