Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10072882 | Solar powered thermally conditioned space | Mohsen Rezayat, Phil Baker | 2018-09-11 |
| 9581360 | Gas balanced cryogenic expansion engine | Stephen Dunn, Ralph C. Longsworth | 2017-02-28 |
| 8776534 | Gas balanced cryogenic expansion engine | Stephen Dunn, Ralph C. Longsworth | 2014-07-15 |
| 7451652 | Interrupted DC operation of thermocouple vacuum gauge | Gary S. Ash, Paul Nickelsberg | 2008-11-18 |
| 5620198 | Collar for trailer hitch receiver | — | 1997-04-15 |