Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682666 | Method of making a water heater capable of being hung from a support | — | 1997-11-04 |
| 5660165 | Back-up heater | — | 1997-08-26 |
| 5596952 | Indirect water heater | Charles W. Staats | 1997-01-28 |