Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8556557 | Hydraulic nut and improved seals therefor | David Hughes, Mark Johnson | 2013-10-15 |
| 8328482 | Hydraulic foundation bolt tensioner | David Hughes | 2012-12-11 |
| 7673849 | Unibody hydraulic nut | David Hughes | 2010-03-09 |