Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932054 | Double point derail switch | Brian Weaver, Phillip R. Merrifield | 2018-04-03 |
| 8001907 | System, method and apparatus for easer rail that mates with the uncut web of a running rail | — | 2011-08-23 |
| 7793891 | Railway diamond crossing | Robert C. Roberts, Brian Weaver | 2010-09-14 |
| 6971610 | Railway diamond wedge crossing with reversible beam castings | Robert C. Roberts, Brian Weaver | 2005-12-06 |
| 6732980 | Railway frog wear component | — | 2004-05-11 |
| 5746400 | Rail crossing assembly | James A. Remington, Kenneth L. Schultz | 1998-05-05 |