Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8109252 | Rotary engine combustion chamber | Barton W. Watkins | 2012-02-07 |
| 7614382 | Aspiration plate for planetary rotary internal combustion engine | Barton W. Watkins | 2009-11-10 |
| 7350501 | Planetary rotary internal combustion engine | Ernest Watkins, Barton W. Watkins | 2008-04-01 |
| 7044102 | Planetary rotary internal combustion engine | Barton W. Watkins, Ernest Watkins | 2006-05-16 |
| 6932047 | Planetary piston rotary engine | Barton W. Watkins, Ernest Watkins | 2005-08-23 |