Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9955833 | Vacuum cleaner | Kiyong Song, Gunho Ha | 2018-05-01 |
| 9609989 | Vacuum cleaner for bedding | Changdo Park, Taekyung Kim | 2017-04-04 |
CL
Changook Lee
Overall (All Time): #1,953,026 of 4,157,543Top 50%
2
Patents All Time