Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8365673 | System and method for railroad track tie plate collection from a rail bed | Mark Plyler, Andy Loftis, Gary E. Gibson | 2013-02-05 |
| 8082852 | System and method for railroad track tie plate orientation | Mark Plyler, Andy Loftis, John B. Cook, Michael W. Adams | 2011-12-27 |