Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5430934 | Method for manufacturing a direct acting hydraulic tappet | David M. Groh, Chris P. Kaniut, Steven L. Worthington, Scott C. Johnson | 1995-07-11 |
| 5280771 | Direct acting hydraulic tappet | David M. Groh, Chris P. Kaniut, Steven L. Worthington, Scott C. Johnson | 1994-01-25 |
| 4365608 | Controlling engine exhaust gas recirculation and vacuum inverter | Cyril E. Bradshaw | 1982-12-28 |
| 4227494 | Valve disabler and control | — | 1980-10-14 |
| 4222354 | Valve disabler | — | 1980-09-16 |