Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11168446 | Rail fastening apparatus | Brent Duffner, Bradley Smith, Derek Cameron | 2021-11-09 |
| D910487 | Railroad tie | Matt Moore, Brent Duffner, Bradley Smith, Derek Cameron | 2021-02-16 |
| 10400397 | Boltless rail brace | Brent Duffner, Bradley Smith, Derek Cameron | 2019-09-03 |
| 9352762 | Dual independent control hydraulic switch machine | Brent Duffner | 2016-05-31 |
| 9290192 | Spring wing controller | Brent Duffner, Bradley Smith, Martin Webb | 2016-03-22 |
| 7677466 | Insulated rail joint assembly | Brent Duffner | 2010-03-16 |
| 7185860 | Tongue switch | Cory O'Brien | 2007-03-06 |
| 7168664 | Assist rod and basket assembly | Cory O'Brien | 2007-01-30 |
| 6955326 | Tongue switch | Cory O'Brien | 2005-10-18 |
| 6758445 | Replaceable point frog | Allen J. Tuningley | 2004-07-06 |
| 6688560 | Assist rod and basket assembly | Cory O'Brien | 2004-02-10 |
| 6543727 | Assist rod and basket assembly | Cory O'Brien | 2003-04-08 |
| 6266866 | Frog insert and assembly and method for making frog assembly | Jacqueline Ramirez, Al Forshaw | 2001-07-31 |
| 6158698 | Hollow tie switch assembly | Al Forshaw, Brian M. Charles, Cory O'Brien | 2000-12-12 |
| 5797565 | Railway diamond crossing | Alan James Tuningley, Johannes Oswald, Michael Brian Starkey, Tommy Lee | 1998-08-25 |