Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6713224 | Sound recording film | Susan D. Hill, Jean-Fabien Dupont | 2004-03-30 |
| 5856057 | Chromogenic sound recording film | Richard C. Sehlin, Mitchell J. Bogdanowicz, Patricia R. Greco, Gary N. Barber | 1999-01-05 |