Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9435088 | Structural tube based vehicle crash fence | Steven L. Kemper, Timothy J. Manzella | 2016-09-06 |
| 9410298 | Structural tube based movable vehicle crash barrier gate | Steven L. Kemper, Timothy J. Manzella, Scott E. Espensen | 2016-08-09 |
| 9347191 | Structural tube based vehicle crash fence | Steven L. Kemper, Timothy J. Manzella | 2016-05-24 |