Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7353781 | Arrangement structure of heat exchanger in condensing gas boiler | Yong Hyen Jung | 2008-04-08 |
| 6907846 | Condensing gas boiler having structure of preventing corrosion caused by using heterogeneous metal | Youn-cheol Shin | 2005-06-21 |