Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8647012 | Gate for barrier system and methods for the assembly and use thereof | Anthony R. Van Brocklin, Barry D. Stephens | 2014-02-11 |
| 8348546 | Method for transferring a barrier | James B. Welch, Patrick A. Leonhardt, Michael H. Oberth, Barry D. Stephens, Sean Thompson +1 more | 2013-01-08 |
| 8109692 | Barrier transfer device, system and method for the use thereof | James B. Welch, Patrick A. Leonhardt, Michael H. Oberth, Barry D. Stephens, Sean Thompson +1 more | 2012-02-07 |
| 7758277 | Crash cushion | John F. La Turner, Michael H. Oberth | 2010-07-20 |
| 7484906 | Crash cushion | John F. La Turner, Michael H. Oberth | 2009-02-03 |
| 7396184 | Crash cushion | John F. La Turner, Michael H. Oberth | 2008-07-08 |