Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834394 | Sealed universal movement of a shaft extending between environments | Theodore E. Nalesnik | 1989-05-30 |
| 4811958 | Sealed shafts moveable in vacuum chambers by exercising control from outside | — | 1989-03-14 |