Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4409583 | Video system for assisting automobile traffic employing a segmented LCD display | Phac Letuan | 1983-10-11 |
| 4398171 | Video system for plotting and transmitting video traffic information | Phac Letuan | 1983-08-09 |