Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6706983 | Multi-function erroneous contact protection structure for electronic device keyboards | Johnson Tsao | 2004-03-16 |
| 6654232 | Portable computer which uses spring to buffer shock force of a monitor | Johnson Tsao | 2003-11-25 |