Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4477700 | Tactile membrane keyboard with elliptical tactile key elements | Frederick A. Balash | 1984-10-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4477700 | Tactile membrane keyboard with elliptical tactile key elements | Frederick A. Balash | 1984-10-16 |