Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5729474 | Method of anticipating potential HVAC failure | Paul N. Hildebrand, W. John Light, T. Frank Knight | 1998-03-17 |
| 5640153 | Energy utilization controller and control system and method | Paul N. Hildebrand, T. Frank Knight, Carlton R. Hildebrand | 1997-06-17 |
| 5539633 | Temperature control method and apparatus | Paul N. Hildebrand, Ronald E. Briggs, T. Frank Knight, Manjiree Jalukar, Ralph Dietz | 1996-07-23 |