Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5918806 | Electrically insulated railway cross tie | Sean Keightley, Robert Scott Johnston, Brent Andrew Jarvis | 1999-07-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5918806 | Electrically insulated railway cross tie | Sean Keightley, Robert Scott Johnston, Brent Andrew Jarvis | 1999-07-06 |