Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9816425 | Air heating apparatus | Richard R. Koopmann, Nathan Thompson, Joseph Naglestad, Chris Wielenga | 2017-11-14 |
| 9366170 | Air heating apparatus | Richard R. Koopmann, Nathan Thompson, Joseph Naglestad, Chris Wielenga | 2016-06-14 |