Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9014939 | Signal based safety system for construction zone | Robert L. Mendenhall, Leonard Gainey, John Alfred Bugay | 2015-04-21 |
| 8849522 | Signal based safety system for construction zone | Robert L. Mendenhall, Leonard Gainey, John Alfred Bugay | 2014-09-30 |
| 8012265 | Concrete/asphalt wet washing system | Robert L. Mendenhall | 2011-09-06 |
| 7578885 | Concrete/asphalt wet washing system | Robert L. Mendenhall | 2009-08-25 |