Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5494212 | Rail-tie fastening method for concrete tie | — | 1996-02-27 |
| 5485955 | Rail-tie fastening assembly for concrete tie | — | 1996-01-23 |
| 5288016 | Rail-tie fastening assembly with rocking bearing seat | — | 1994-02-22 |
| 5168627 | Railroad tie end plate attachment method | — | 1992-12-08 |
| 5165599 | Rail-tie fastening systems | Paul A. Wolff | 1992-11-24 |
| 5160084 | Method for adhesively bonding a rail-tie fastening assembly to a wooden railway tie | Roger A. Baldwin, Gerald Taylor, Paul A. Wolff | 1992-11-03 |
| 5096117 | Railroad grade crossings | — | 1992-03-17 |
| 5078319 | Rail-tie fastening systems | Paul A. Wolff | 1992-01-07 |
| 4899932 | Capped highway grade crossing | Dale K. Beachy, Robert B. Dehls, James H. Simpson | 1990-02-13 |
| 4892249 | Railroad grade crossing with improved transverse spline and anchoring assembly | — | 1990-01-09 |
| 4874128 | Rail-tie fastening assembly | — | 1989-10-17 |
| 4732320 | Railroad grade crossing with transverse securing splines | — | 1988-03-22 |