Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7637973 | Vacuum cleaner in which a dust bag or a cyclone dust collecting apparatus is selectively mounted | Jang-keun Oh, Jin-gon Lee | 2009-12-29 |
| 7628846 | Vacuum cleaner | Jang-keun Oh | 2009-12-08 |
| 7611558 | Dust compressing apparatus of vacuum cleaner | Jang-keun Oh, Jin-gon Lee | 2009-11-03 |
| 7562414 | Dust sensing unit for use in vacuum cleaner | Jang-keun Oh, Min-ha Kim, Jin-gon Lee, Jung-gyun Han | 2009-07-21 |