Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8820613 | Method of reattaching an end assembly to a well car | William R. Halliar, Frank F. Stec | 2014-09-02 |
| 8333001 | Method of shortening a well car | William R. Halliar, Frank F. Stec | 2012-12-18 |
| 8186279 | Removable bulkhead for a railcar | William R. Halliar, Stuart F. Trout | 2012-05-29 |
| 6904698 | Apparatus for measuring piston travel | William R. Halliar, Stuart F. Trout | 2005-06-14 |
| 4929132 | Articulated platform car for three or four trailers | Richard P. Yeates, William R. Halliar | 1990-05-29 |