Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9568214 | Systems and methods for heating water using biofuel | David S. Sharpe, Michael R. Kuehner, Douglas S. Denton | 2017-02-14 |
| 9115900 | Systems and methods for heating water using biofuel | David S. Sharpe, Michael R. Kuehner, Douglas S. Denton | 2015-08-25 |