Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4415781 | Membrane switch | Norman J. Frame, Jan M. Janick | 1983-11-15 |
| 4412209 | RC Array | Norman J. Frame, Jan M. Janick | 1983-10-25 |
| 4389583 | Capacitance switch detection circuitry | — | 1983-06-21 |