Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5600903 | Ballast shoulder cleaner | — | 1997-02-11 |
| 5459951 | Ballast shoulder cleaner | Steven L. Atchison | 1995-10-24 |
| 5183118 | High-capacity ballast reconditioning apparatus | John K. Kershaw | 1993-02-02 |
| 5109775 | Ballast reconditioning apparatus with multiple excavating wheels and independent cleaning stations for increased operating speed | John K. Kershaw | 1992-05-05 |
| 5029649 | Ballast reconditioning apparatus | John K. Kershaw | 1991-07-09 |
| D281071 | Tree trimming machine | — | 1985-10-22 |
| 4222418 | Apparatus for mounting flail members on a rotatable drum | George B. Hammond | 1980-09-16 |