Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342014 | Display system | — | 1994-08-30 |
| 4367146 | Long vertical shaft bioreactor with modified waste liquor injection | David Clarke Pollock | 1983-01-04 |
| 4340484 | Method for the froth flotation separation and treatment of slowly biodegradable components in waste treatment | David Clarke Pollock | 1982-07-20 |