Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4660386 | Diagnostic system for detecting faulty sensors in liquid chiller air conditioning system | John C. Hansen, Harold B. Ginder | 1987-04-28 |
| 4653280 | Diagnostic system for detecting faulty sensors in a refrigeration system | John C. Hansen, Harold B. Ginder | 1987-03-31 |
| 4539632 | Programmable maintenance timer system | John C. Hansen | 1985-09-03 |