Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780033 | Rail car with rotatable floor for quick loading and unloading of trailers | Fedde Walda, Nanne M. Walda | 1988-10-25 |
| 4776735 | Locking and stiffening means for a rail car with a rotatable loading floor | Fedde Walda, Nanne M. Walda | 1988-10-11 |