Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850152 | Apparatus for lapping and polishing optical surfaces | Klaus Beckstette, Michael Schmidt | 1989-07-25 |
| 4802309 | Method and apparatus for lapping and polishing optical surfaces | — | 1989-02-07 |