Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8289295 | Wireless multi-user touch control system | — | 2012-10-16 |
| 7503673 | LED light source module in tube | — | 2009-03-17 |
| 7227539 | Electronic pen device | — | 2007-06-05 |
| 6919881 | Digital display system | — | 2005-07-19 |
| 6886263 | Auxiliary drafting instrument combination applicable to digital board | — | 2005-05-03 |