Issued Patents 2011
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8032982 | Upright vacuum cleaner having suction path switching valve | Byung-jo Lee, Joung-soo Park | 2011-10-11 |
| 7996954 | Path-conversion valve assembly for vacuum cleaner | Dong Yun Lee | 2011-08-16 |
| 7950102 | Upright vacuum cleaner having steering unit | Byung-jo Lee, Joung-soo Park, See-hyun Kim | 2011-05-31 |
| 7879142 | Cyclone dust collector and vacuum cleaner | Jung-gyun Han, Joung-soo Park, Byung-jo Lee, See-hyun Kim | 2011-02-01 |
| 7862637 | Multi-cyclone dust separator | Jung-gyun Han, Joung-soo Park, Byung-jo Lee, See-hyun Kim, Sung-Soo Ahn | 2011-01-04 |