Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5287489 | Method and system for authoring, editing and testing instructional materials for use in simulated trailing systems | Mark A. Johnson, Peter Hedger | 1994-02-15 |
| 5173685 | Monitoring circuits for lamps or other electrical loads using a comparator with a constant voltage power supply | — | 1992-12-22 |
| 4291302 | Lamp monitoring circuits | Gordon A. King, Wolfgang Bial | 1981-09-22 |