Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6945197 | Water heater | — | 2005-09-20 |
| 5775236 | Combustion control circuit of combustion apparatus | Gordon W. Fenn, Hong Jib Kim | 1998-07-07 |
| 5775895 | Combustion-state detecting circuit of combustion apparatus | Gordon W. Fenn, Hong Jib Kim | 1998-07-07 |
| 5566648 | Heat exchanger | Gordon W. Fenn | 1996-10-22 |
| 5526776 | Gas quick water heater | Gordon W. Fenn, Min Hwan OH, Hong Jib Kim | 1996-06-18 |