Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999404 | Phase change on demand integrated pressure pump and power plant | David P. Fries | 2011-08-16 |
| 7898097 | Phase change on demand integrated pressure pump and power plant | David P. Fries | 2011-03-01 |