Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8048180 | Dual cyclone dust-collecting apparatus vacuum cleaner | Jang-keun Oh | 2011-11-01 |
| 7879142 | Cyclone dust collector and vacuum cleaner | Joung-soo Park, Byung-jo Lee, Tae-gwang Kim, See-hyun Kim | 2011-02-01 |
| 7862637 | Multi-cyclone dust separator | Joung-soo Park, Byung-jo Lee, Tae-gwang Kim, See-hyun Kim, Sung-Soo Ahn | 2011-01-04 |