Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8049358 | Marine power distribution and propulsion systems | Allan David Crane | 2011-11-01 |
| 7554240 | Tubular electrical machines | Graham LeFlem | 2009-06-30 |
| 6856053 | Cooling of electrical machines | Graham LeFlem, Joseph Eugene | 2005-02-15 |
| 6846209 | Propulsion unit | David Christopher Brook | 2005-01-25 |
| 6582257 | Propulsion unit | David Christopher Brook | 2003-06-24 |