Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6929393 | Asphalt production plant | J. Donald Brock, Herbert E. Jakob, R. Ronald Collins, Michael E. Barrett, M. Earl Edwards, Jr. | 2005-08-16 |
| 6062093 | Method and apparatus for sampling aggregate material | J. Donald Brock, M. Earl Edwards, Jr., Robert R. Collins | 2000-05-16 |