Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7310854 | Dust cover of vacuum cleaner | Hyeun Sik Nam, Heon-Pyeong Ji | 2007-12-25 |
| 7174604 | Upright vacuum cleaner with sliding power indicator switch | Suk Young Kim | 2007-02-13 |