Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7174729 | Automatic defrost controller including air damper cleaning | Robert L. Cushman | 2007-02-13 |
| 7131284 | Automatic defrost controller including air damper control | Robert L. Cushman | 2006-11-07 |