Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5197415 | Wet-base, down-fired water heater | Gordon W. Stretch | 1993-03-30 |
| 4676199 | High efficiency water heater construction | Paul G. Daugirda | 1987-06-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5197415 | Wet-base, down-fired water heater | Gordon W. Stretch | 1993-03-30 |
| 4676199 | High efficiency water heater construction | Paul G. Daugirda | 1987-06-30 |