Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9694390 | Rotary interstage screen apparatus | — | 2017-07-04 |
| 7111739 | Wet fine particle sizing and separating apparatus | — | 2006-09-26 |
| 6679386 | Low-density particle sizing apparatus and method | — | 2004-01-20 |
| 5100539 | Dual-screen particle sizing apparatus and method | — | 1992-03-31 |
| 4555330 | Method and apparatus for separating material | Richard J. Frohman | 1985-11-26 |
| 4361240 | Material separating machine | William F. Davis | 1982-11-30 |
| 4319992 | Material separating machine | William F. Davis | 1982-03-16 |