Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4950074 | Method of determining the refractive index of a substance and apparatus thereof | Norbert Fabricius, Helmut Oeste, Helga Gotz, Ludwig Ro.beta., Hans-Jurgen Guttmann +2 more | 1990-08-21 |