Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7971315 | Suction brush for vacuum cleaner | Jang-keun Oh | 2011-07-05 |
| 7921509 | Suction brush for use in vacuum cleaner and method of adjusting the height thereof | Jang-keun Oh | 2011-04-12 |
| 7879120 | Vacuum cleaner | Ji Ho Seo, Dong-hun Yoo | 2011-02-01 |