Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6787715 | N-shaped antenna loops of digitizer tablet for reducing antenna switches and the method for locating the cordless pen | Ching-Chuan Chao | 2004-09-07 |
| 6717574 | Feedback peak detector fitted wireless handwriting tablet | — | 2004-04-06 |