Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699756 | Wet-base, down-fired water heater | David Ross, Dale A. Southerland | 1997-12-23 |
| 5668922 | Water heater having molded plastic storage tank and associated fabrication methods | David Ross, David Clayton Poole | 1997-09-16 |