Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9228746 | Heating device having a secondary safety circuit for a fuel line and method of operating the same | Dennis R. Hughes | 2016-01-05 |
| 8161918 | Water heater | Hongfei Ma, Zhihua Zhang, Lei Cao, Gu Qinghai | 2012-04-24 |
| 7438023 | Heating device having a thermal cut-off circuit for a fuel line and method of operating the same | Dennis R. Hughes | 2008-10-21 |
| 7316206 | Water heater with noise attenuation | Marc W. Akkala | 2008-01-08 |
| 7051683 | Gas heating device control | Robert F. Poehlman | 2006-05-30 |