Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780033 | Rail car with rotatable floor for quick loading and unloading of trailers | Nanne M. Walda, Benne F. Walda | 1988-10-25 |
| 4776735 | Locking and stiffening means for a rail car with a rotatable loading floor | Nanne M. Walda, Benne F. Walda | 1988-10-11 |
| 4425064 | Railway car turntable loading system | Nanne M. Walda, Benno F. Walda | 1984-01-10 |