Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5970577 | Brush head assembly for a vacuum cleaner | — | 1999-10-26 |
| 5950272 | Vacuum cleaner having an apparatus for fixing a cord | Chang Woo Son | 1999-09-14 |
| 5949021 | Apparatus for fixing a power control switch of a vacuum cleaner | — | 1999-09-07 |
| 5894629 | Sound absorbing assembly for a vacuum cleaner | — | 1999-04-20 |
| 5829093 | Indicator device for a vacuum cleaner dust container | — | 1998-11-03 |
| 5797661 | Wheel of a vacuum cleaner | Jin Bang Lee, Seon Kyu Kim | 1998-08-25 |
| 5778486 | Indicator device for a vacuum cleaner dust container which has an additional pressure controller | — | 1998-07-14 |
| 5666688 | Cleaner having a switch button for operating a power on/off switch and a cord-winding unit | — | 1997-09-16 |