Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7150062 | Combined single-twin street sweeping machine | Gabriel Charky | 2006-12-19 |
| 5477882 | Hydraulic systems | — | 1995-12-26 |
| 5419006 | Exhauster fan systems | — | 1995-05-30 |
| 5056615 | Vehicle control system | Mark Cullen | 1991-10-15 |
| 5044887 | Blower fan impellers | Mark Cullen | 1991-09-03 |
| 4903368 | Road sweeping vehicles | Clive Frederick OFFLEY | 1990-02-27 |
| 4779303 | Road sweeping vehicles | Michael Sandford | 1988-10-25 |
| 4773119 | Road sweeping vehicles | Michael Sandford | 1988-09-27 |
| 4236871 | Centrifugal fan impellers with blades secured between plates | Peter B. Hirst | 1980-12-02 |