Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5901963 | Gas nitrided taper faced keystone piston ring incorporating a sealing land and orientation groove | John C. Lahrman, Hugo A. Rita | 1999-05-11 |
| 5605741 | Hybrid face coating for piston ring | Ihor R. Maksymiak, Michael Albion Kestner | 1997-02-25 |
| 4983797 | Method for manufacturing a composite camshaft | David Kirk McAllister | 1991-01-08 |