Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8707582 | Energy storage and return spring | James Brent Klassen | 2014-04-29 |
| 8459028 | Energy transfer machine and method | James Brent Klassen | 2013-06-11 |
| 8011345 | Energy transfer machine with inner rotor | James Brent Klassen | 2011-09-06 |
| 7954470 | Energy transfer machine | James Brent Klassen | 2011-06-07 |
| 7503307 | Energy transfer machine with inner rotor | James Brent Klassen | 2009-03-17 |
| 7472677 | Energy transfer machine | James Brent Klassen | 2009-01-06 |