Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6561780 | System and assembly for the manufacturing of prestressed reinforced concrete railroad ties and the like | Robert Ollendick | 2003-05-13 |
| 6546612 | Pre-plating of wooden railroad ties | Robert Ollendick | 2003-04-15 |