Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353980 | Process for the production of protective layers for photographic materials | Gunter Helling | 1982-10-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353980 | Process for the production of protective layers for photographic materials | Gunter Helling | 1982-10-12 |