Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802693 | Vortex attractor with vanes attached to containing ring and backplate | Lewis Illingworth | 2004-10-12 |
| 6802881 | Rotating wave dust separator | Lewis Illingworth | 2004-10-12 |
| 6729839 | Toroidal and compound vortex attractor | Lewis Illingworth | 2004-05-04 |
| 6719830 | Toroidal vortex vacuum cleaner centrifugal dust separator | Lewis Illingworth | 2004-04-13 |
| 6687951 | Toroidal vortex bagless vacuum cleaner | Lewis Illingworth | 2004-02-10 |