Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856872 | Attachment for microscopes | M. Spitznas, Wolfgang Veit | 1989-08-15 |
| 4798458 | Anomaloscope | Hartmut Gehrung, Hermanm Krastel | 1989-01-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856872 | Attachment for microscopes | M. Spitznas, Wolfgang Veit | 1989-08-15 |
| 4798458 | Anomaloscope | Hartmut Gehrung, Hermanm Krastel | 1989-01-17 |