Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7624475 | Upright type vacuum cleaner capable of being converted to canister type | — | 2009-12-01 |
| 7600291 | Main body mounting structure of upright type vacuum cleaner capable of being converted to canister type | — | 2009-10-13 |
| 7594297 | Angle control apparatus for upright type vacuum cleaner | — | 2009-09-29 |
| 6779229 | Versatile vacuum cleaner | Nam-Ho Lee, Jae-Duck Lee, Min-Ho Park | 2004-08-24 |