Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4955474 | Water heater package construction | Bruce W. Mattingly | 1990-09-11 |
| 4947619 | Water heater package construction and method | Bruce W. Mattingly | 1990-08-14 |
| 4881641 | Water heater package construction and method | Bruce W. Mattingly | 1989-11-21 |