Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8526273 | Time interval indicating device | Ng Kwok-ho Victor | 2013-09-03 |
| 8072846 | Time interval indicating device | Ng Kwok-ho Victor | 2011-12-06 |
| 7729206 | Time interval indicating device | Ng Kwok-ho Victor | 2010-06-01 |
| 7351062 | Educational devices, systems and methods using optical character recognition | Victor Kwok-ho Ng, Barbara Plain, Po Man Yuen | 2008-04-01 |
| D531669 | Educational device | Tirza Ernst | 2006-11-07 |