Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5222605 | Automatic particle size analyzer using stacked sieves | — | 1993-06-29 |
| 5181618 | Apparatus for clearing the weigh pan of a particle size analyzer | — | 1993-01-26 |
| 4797204 | Automatic particle-size analyzer with divided drum | William E. Lower | 1989-01-10 |
| D294948 | Particle size analyzer | William E. Lower | 1988-03-29 |
| 4702826 | Screen cleaner for particle size analyzer | — | 1987-10-27 |