Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5381554 | Uninterrupted power supply (UPS) system interfacing with communications network | Dale R. Langer | 1995-01-10 |
| 5319571 | UPS system with improved network communications | Dale R. Langer | 1994-06-07 |