Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4707208 | Method for covering a lens blank with a protective plastic film | Richard Crumbach, Manfred Gillner, Heinz Schilde | 1987-11-17 |
| 4564408 | Process and device for covering a lens preform with a protective sheet | Richard Crumbach, Heinz Schilde | 1986-01-14 |