Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4770103 | Method and apparatus for exchanging railway cross ties with rail clamping mechanism to prevent rail flexure | — | 1988-09-13 |
| 4421034 | Compact bidirectionally operative tie exchanging apparatus | — | 1983-12-20 |
| 4418625 | Bidirectionally operative tie exchanging apparatus | — | 1983-12-06 |