Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7140332 | Pneumatically actuated valve for internal combustion engines | Jeffrey F. Klein | 2006-11-28 |
| 6938597 | Variable spring force intake valve assembly | Jeffrey F. Klein | 2005-09-06 |
| 6832595 | Self-cleaning internal combustion engine intake valve | Jeffrey F. Klein | 2004-12-21 |