Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7575017 | Wet barrel fire hydrant system with second valve | Thomas Davidson, David Michael Walden, Anthony Ferrari, David Phillips, O. G. Sims | 2009-08-18 |
| 7428910 | Breathable fire hydrant rod | Tom Davidson, Anthony Ferrari, David Michael Walden | 2008-09-30 |
| 7240688 | Retrofitting a fire hydrant with secondary valve | Thomas Davidson, Anthony Ferrari, David Michael Walden | 2007-07-10 |