Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4477700 | Tactile membrane keyboard with elliptical tactile key elements | Mary T. Caton | 1984-10-16 |
| 4415780 | Keyboard with edge vent | James B. Daugherty | 1983-11-15 |
| 4382165 | Membrane keyboard and method of formation thereof | James B. Daugherty | 1983-05-03 |
| 4323740 | Keyboard actuator device and keyboard incorporating the device | — | 1982-04-06 |