Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581780 | Automatic gradation unit | Herbert E. Jakob, Michael E. Barrett, Gary Heeszel | 2003-06-24 |
| 6575303 | Processing a product including aggregate materials and a volatile component | J. Donald Brock, Herbert E. Jakob, Michael E. Barrett, R. Ronald Collins, Gary Heeszel | 2003-06-10 |
| 6032886 | Adjustment for rock crusher | Daniel C. Drinkwater, Roger M. Clark, Gerald E. Parker, Gary Heeszel, Randy Orre | 2000-03-07 |
| 5950939 | Cone crusher for rock | Daniel C. Drinkwater, Roger M. Clark, Gerald E. Parker | 1999-09-14 |
| 4717084 | Hydraulic system for remote operable cone crushers | John C. Vendelin | 1988-01-05 |