Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11753774 | Anchoring device for a railway rail fastening assembly | John Phillip Porrill, John D. Spencer, Stephen John Cox, Steven Harkness, Chris Lea | 2023-09-12 |
| 9938668 | Anchoring devices for rail fastening clips | Steven Harkness, Pierre Barthram, Jozef Nevidal | 2018-04-10 |