Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901649 | Span bolster assembly | Joseph Lam | 1990-02-20 |
| 4562633 | Railway box car conversion to highway trailer-carrying flatcar and method of accomplishing it | Norman S. Adams, John Alan Ritter | 1986-01-07 |