Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499019 | Electronic payment device using unbalanced binary tree and the method of the same | Sung-Ming Yen, Chiung-Ying Huang, Chien-Chung Yuan | 2002-12-24 |
| 6488289 | Bi-functional roller skate | Chun-Chung Hsiao, Hung-Lung Huang | 2002-12-03 |