Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344552 | Independent drive for a roller cavity suction apparatus | — | 1982-08-17 |
| 4334884 | Process for the continuous preparation of photographic emulsions | Werner Wilke, Hans Frenken | 1982-06-15 |