Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9505416 | Top chord stiffener for enclosed railcar | Ronald P. Sellberg, Frank Andrew Nibouar | 2016-11-29 |
| 8833269 | Top chord stiffener for enclosed railcar | Ronald P. Sellberg, Frank Andrew Nibouar | 2014-09-16 |
| 8128325 | Tie-down anchor for freight | Ronald P. Sellberg | 2012-03-06 |
| 7802525 | Multi-fold doors for enclosed railcars | Ronald P. Sellberg, Frank Andrew Nibouar | 2010-09-28 |
| 7614834 | Tie-down anchor for freight | Ronald P. Sellberg | 2009-11-10 |
| 7401559 | Single level enclosed railcar and method of manufacturing | F. Andrew Nibouar, Ronald P. Sellberg | 2008-07-22 |
| 5360125 | Draw bar connection having a relatively rigid filling member to allow about one half inch of travel | Ronald P. Sellberg, Richard P. Yeates | 1994-11-01 |
| 4947760 | Articulated flat car | Ronald P. Sellberg | 1990-08-14 |