Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6076367 | Variable speed liquid refrigerant pump | David Ward | 2000-06-20 |
| 5749237 | Refrigerant system flash gas suppressor with variable speed drive | David Ward | 1998-05-12 |
| 5435148 | Apparatus for maximizing air conditioning and/or refrigeration system efficiency | David Ward | 1995-07-25 |