Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7549821 | Wireless remote-controlled pavement recycling machine | David R. Hall | 2009-06-23 |
| 7544011 | Apparatus for depositing pavement rejuvenation materials on a road surface | David R. Hall, Timothy C. Duke | 2009-06-09 |
| 7424922 | Rotary valve for a jack hammer | David R. Hall | 2008-09-16 |
| 7223049 | Apparatus, system and method for directional degradation of a paved surface | David R. Hall, Scott R. Little, Joe Fox | 2007-05-29 |