Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6523221 | Railcar cleaning method and apparatus | William S. Pladson | 2003-02-25 |
| 6382272 | Locomotive servicing vehicle | William S. Pladson | 2002-05-07 |
| 6317919 | Railcar cleaning apparatus | William S. Pladson | 2001-11-20 |
| 6176279 | Locomotive servicing method and vehicle | William S. Pladson | 2001-01-23 |
| 6165283 | Railcar cleaning method and apparatus | William S. Pladson | 2000-12-26 |
| D397453 | Roof safety support | William S. Pladson, Rick McComas | 1998-08-25 |
| 5762002 | Cover for open top rail car | William S. Pladson | 1998-06-09 |
| D387308 | Open top rail car end cap | William S. Pladson | 1997-12-09 |
| 5402874 | Mobile conveyor | William S. Pladson | 1995-04-04 |