Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8146937 | Twin-frame bicycle | Hsu Sheng Chin, Chih-Ching Chin | 2012-04-03 |
| 7967312 | Dual riding and driving tricycle in juxtaposing link | Hsu Sheng Chin, Chih-Ching Chin | 2011-06-28 |
| 7874566 | Dual riding and driving tricycle in juxtaposing link | Hsu Sheng Chin, Chih-Ching Chin | 2011-01-25 |