Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863183 | Front-cargo tricycle | Yong Koo Hwang | 1989-09-05 |
| 4847919 | Ventilation band | Yong Ki HWANG | 1989-07-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863183 | Front-cargo tricycle | Yong Koo Hwang | 1989-09-05 |
| 4847919 | Ventilation band | Yong Ki HWANG | 1989-07-18 |