Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668804 | Control system and method for a bi-fuel engine | Allen Dennis Dobryden, John M. Lapetz | 2003-12-30 |
| 6543423 | Control system and method for a bi-fuel engine | Allen Dennis Dobryden, John M. Lapetz | 2003-04-08 |