Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6126705 | Process for treating coal tailings | Jeremy J. Lees | 2000-10-03 |
| 5791074 | Dredge | — | 1998-08-11 |
| 5765696 | Rapped sieve bend | — | 1998-06-16 |
| 5108626 | Process for recovering course particles from tailings | Jeremy J. Lees, Andrew J. Dalzell | 1992-04-28 |
| 4781822 | Spiral separator | — | 1988-11-01 |
| 4664789 | Classifying device | Jeremy J. Lees, John R. Andrews | 1987-05-12 |