Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5048335 | Capacitance-type material level indicator | Norman F. Marsh, John R. Schutt | 1991-09-17 |
| 4484344 | Voice operated switch | Don L. Mai | 1984-11-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5048335 | Capacitance-type material level indicator | Norman F. Marsh, John R. Schutt | 1991-09-17 |
| 4484344 | Voice operated switch | Don L. Mai | 1984-11-20 |