Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5538182 | Railroad crossing system | Bryan L. Holland, Jack D. Williams | 1996-07-23 |
| 5465903 | Mounting plate for fixing elastomeric grade crossing panels to ties | Rolf Heineman | 1995-11-14 |
| 5181657 | Composite rubber/concrete railroad grade crossing system | — | 1993-01-26 |