Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799076 | Apparatus for affording access to exposed but undeveloped films in a dark chamber | Helmut Zangenfeind, Reinhart Wurfel | 1989-01-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799076 | Apparatus for affording access to exposed but undeveloped films in a dark chamber | Helmut Zangenfeind, Reinhart Wurfel | 1989-01-17 |