Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6138692 | Cycle for a dishwasher to reduce filming | Duane M. Kobos, Kenneth N. Whah, Ernst Grunewald, Ralph E. Christman | 2000-10-31 |
| 4366434 | Voltage detectors and electrical continuity checkers | — | 1982-12-28 |