Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6173575 | Method and apparatus to cool food contact machines and surfaces | Donald M. Hall | 2001-01-16 |
| 5931018 | Method and apparatus to cool food contact machines and surfaces | Donald M. Hall | 1999-08-03 |
| 5816051 | Method and apparatus to cool food contact machines and Surface | Donald M. Hall | 1998-10-06 |
| 5765386 | Method and apparatus to cool food contact machines and surface | Donald M. Hall | 1998-06-16 |
| 5746063 | Method and apparatus to cool food contact machines and surface | Donald M. Hall | 1998-05-05 |