Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4643002 | Continuous metered flow multizone air conditioning system | Richard D. Dennis | 1987-02-17 |
| 4492092 | Combination refrigerant circuit and hot water preheater | Michael E. Smorol, Michael C. Wituszynski | 1985-01-08 |