Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10132510 | System and approach for water heater comfort and efficiency improvement | David Heil, Frederick Hazzard | 2018-11-20 |
| 10049555 | Water heater leak detection system | Frederick Hazzard, David Heil | 2018-08-14 |
| 9920930 | Thermopile assembly with heat sink | David Heil, Frederick Hazzard | 2018-03-20 |