Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087217 | Swimming shoe | T. L. Duan | 1992-02-11 |
| 5054511 | Tire valve having an automatic pressure release device | T. L. Duan | 1991-10-08 |
| 4986688 | Structure of ball and socket joint for a vehicle steering control system | Yuan-Ling Tuan | 1991-01-22 |