Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863623 | Novel VI improver, dispersant, and anti-oxidant additive and lubricating oil composition containing same | — | 1989-09-05 |
| 4834394 | Sealed universal movement of a shaft extending between environments | George Katz | 1989-05-30 |