Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7350501 | Planetary rotary internal combustion engine | Barton W. Watkins, Lawrence A. Hendrix | 2008-04-01 |
| 7044102 | Planetary rotary internal combustion engine | Lawrence A. Hendrix, Barton W. Watkins | 2006-05-16 |
| 6932047 | Planetary piston rotary engine | Lawrence A. Hendrix, Barton W. Watkins | 2005-08-23 |