Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824223 | Projection objective with variable focal length | Ingolf Menzel | 1989-04-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824223 | Projection objective with variable focal length | Ingolf Menzel | 1989-04-25 |