Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887395 | Wavy-tilt-dam seal ring and apparatus for shaping seal rings | Lionel A. Young | 1989-12-19 |
| 4836561 | Wavy-tilt-dam seal ring | Lionel A. Young | 1989-06-06 |
| 4834400 | Differential surface roughness dynamic seals and bearings | — | 1989-05-30 |