Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7945364 | Service for improving haulage efficiency | David R. Schricker, Anthony Ray Fratini, Christopher M. Sprock | 2011-05-17 |
| 6457502 | Dual tire pressure balance system | Douglas W. Bell, David W. Bruce, David R. Hinton | 2002-10-01 |