Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11906007 | S-cam brake | Sang Weol Han, Jung Hoon Jin | 2024-02-20 |
| 6584621 | Toilet seat with twin protrusions having an egg shape | — | 2003-07-01 |
| 4653194 | Composite-type ruler | — | 1987-03-31 |