Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357280 | Use of tertiary phosphines in photographic silver dye bleach materials | Christoph Chylewski, Gerald Jan, Roland Kurzen, Matthias Schellenberg | 1982-11-02 |
| 4336294 | Coated boards of wooden material in particular for use in furniture | — | 1982-06-22 |