Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4372667 | Manual additive lamphouse for aerial images of caption stands and optical printers | — | 1983-02-08 |
| 4336996 | Variable-focal-length objective and an optical system equipped with objectives of this type for the production of special effects on film | Catherine Perichon | 1982-06-29 |