Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859820 | Quiet key switch | Casimer Gotfryd, Hartland P. Klotz, Robert M. Wentzel | 1989-08-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859820 | Quiet key switch | Casimer Gotfryd, Hartland P. Klotz, Robert M. Wentzel | 1989-08-22 |