Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5813602 | Securing edge protectors for concrete grade crossing panels having integral elastomeric seals | — | 1998-09-29 |
| 5538182 | Railroad crossing system | R. Andrew Davis, Jack D. Williams | 1996-07-23 |