Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6354265 | Electro-mechanical latching rocker arm engine brake | Keith Hampton, Kynan L. Church, Richard L. Madden, David M. Preston | 2002-03-12 |
| 6092497 | Electromechanical latching rocker arm valve deactivator | David M. Preston, Kynan L. Church | 2000-07-25 |