Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5029454 | Dual flow variable area expansion device for heat pump system | — | 1991-07-09 |
| D306642 | Housing for an outdoor coil of an air conditioning system | Dick Chang, Curtis D. Wichmann | 1990-03-13 |