Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11548537 | Centering apparatus for hopper car doors | Nathan A. Landes, Stephen Bedingfield, Michael Staihr, Jacob D. Herzog, Tony Shirk +1 more | 2023-01-10 |
| 6460581 | Wall hopper | Kenneth Gene Marshall | 2002-10-08 |