Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9612042 | Method of operating a refrigeration system in a null cycle | Lars I. Sjoholm, Peter W. Freund, P. Robert Srichai | 2017-04-04 |
| 9062903 | Economizer combined with a heat of compression system | Lars I. Sjoholm, Peter W. Freund, P. Robert Srichai | 2015-06-23 |
| 8847774 | Invisible barrier rechargeable battery assembly | — | 2014-09-30 |
| 8710996 | Invisible fence battery charger | — | 2014-04-29 |