Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8376036 | Air to air heat exchanger | — | 2013-02-19 |
| 7862011 | Non uniform water distribution system for an evaporative cooler | Donald L. Kammerzell | 2011-01-04 |
| 7510174 | Dew point cooling tower, adhesive bonded heat exchanger, and other heat transfer apparatus | — | 2009-03-31 |
| 7131639 | Water distribution system for an evaporative cooler | Donald L. Kammerzell, Charles E. Russo | 2006-11-07 |