Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6789416 | Hand held probe for measuring tire tread wear | Roger H. Tracy, Nicholas J. Radclyffe, Robert Mark Longden | 2004-09-14 |
| 5487341 | Spiker with hole sensing | G. Robert Newman | 1996-01-30 |
| 4658730 | Railroad correction apparatus | Helmuth von Beckmann | 1987-04-21 |