Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9810449 | Methods and apparatus for heating air with hot water | Hugh L. Allen-Magande | 2017-11-07 |
| 9335066 | Water heating system | Scott Humphrey, Timothy J. Shellenberger | 2016-05-10 |
| 8662404 | Methods and apparatus for heating air with hot water | Hugh L. Allen-Magande | 2014-03-04 |
| 8353463 | Methods and apparatus for heating air with hot water | Hugh L. Allen | 2013-01-15 |
| 7380522 | Energy saving water heater | Anthony Krell, Timothy J. Shellenberger | 2008-06-03 |
| 7203418 | Electric water heater with hot water outlet dip tube | Don Pridemore | 2007-04-10 |
| 7159540 | Water heater with air intake and exhaust system | Michael A. Garrabrant, Jeff Lyons, Tim Smith, Roger Gillespie | 2007-01-09 |