Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876763 | Vacuum cleaner | In K. Kwon | 1989-10-31 |
HC
Hae-Suk Cho
Overall (1989): #108,923 of 140,708Top 80%
1
Patents 1989