Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7384548 | Manually controlled skimming of industrial oil contaminants | David Walker | 2008-06-10 |
| 7160473 | Manually controlled skimming of industrial oil contaminants | David Walker | 2007-01-09 |
| 6827853 | Manually controlled skimming of industrial oil contaminants | David Walker | 2004-12-07 |
| 6790370 | Manually controlled skimming of industrial oil contaminants | David Walker | 2004-09-14 |
| 6638437 | Multi-directional flow gravity separator | David Walker | 2003-10-28 |
| 6315131 | Multi-directional flow gravity Separator | David Walker | 2001-11-13 |
| 6277287 | Self leveling suction skimming device | David Walker | 2001-08-21 |
| 6183654 | Self leveling suction skimming device | David Walker | 2001-02-06 |