Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4891053 | Method of manufacturing biconvex lens elements and element formed thereby | Nicodemus Hattu, Willem Johannes Lindhout, Sebastiaan F. M. Trommelen | 1990-01-02 |
| 4398935 | Method and device for the high-precision manufacture of glass articles, in particular lenses | Hendricus F. G. Smulders | 1983-08-16 |