Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8957337 | Rigid keyboard mechanism | — | 2015-02-17 |
| 8822858 | Keyboard design | Harold J. Welch, Chad Bronstein, Patrick Kessler, Chris Ligtenberg | 2014-09-02 |
| 8592699 | Single support lever keyboard mechanism | Patrick Kessler, Bradley J. Hamel | 2013-11-26 |