Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637680 | Horizontal shaft impact rock crusher with breaker plate tension bar locking device | Michael Peter Stemper, Albert D. Botton | 2003-10-28 |
| 6581862 | Horizontal shaft impact rock crusher with breaker plate removal feature | Michael Peter Stemper, Albert D. Botton | 2003-06-24 |