Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543589 | Touchpad with dual sensor that simplifies scanning | William A. Buchana, Anthony R. Tizzard, Brian G. Utley | 1996-08-06 |
| 5521336 | Simplified digital pad sensor | William A. Buchanan, Anthony R. Tizzard, Brian G. Utley | 1996-05-28 |
| 4920237 | Membrane keyboards | Brian J. Keenan, Ian A. Lawson, John J. McAllister | 1990-04-24 |