Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5730297 | Screening machine with improved base force reduction | Stephen C. Mitchell | 1998-03-24 |
| 5301814 | Increasing the relative motion of a screen deck | Stephen C. Mitchell | 1994-04-12 |
| 5186333 | Top cover clamp for screening machine | Bruce A. Pierson | 1993-02-16 |
| 5165550 | Ball cage insert and cage support for screening machine | Bruce A. Pierson | 1992-11-24 |
| 5069778 | Screen deck with pedestal mounted slats | Stephen C. Mitchell | 1991-12-03 |
| 4814071 | Flexible connector for screening machine | — | 1989-03-21 |
| 4802591 | Louvered chip screener | W. Nash McCauley, Stephen C. Mitchell, Roger C. Robins, Steven Schmidt | 1989-02-07 |
| 4797204 | Automatic particle-size analyzer with divided drum | Glenn J. Pogue | 1989-01-10 |
| D294948 | Particle size analyzer | Glenn J. Pogue | 1988-03-29 |
| 4251354 | Screening machine | — | 1981-02-17 |
| 4234416 | Feed stream splitter for multiple deck screening machine | Stephen C. Mitchell, Jeremy F. Simpson | 1980-11-18 |