Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334884 | Process for the continuous preparation of photographic emulsions | Hans Gref, Hans Frenken | 1982-06-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334884 | Process for the continuous preparation of photographic emulsions | Hans Gref, Hans Frenken | 1982-06-15 |