Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808922 | Magnetic field producing device for determining the concentration of a paramagnetic substance passed through a rotating cell chamber | Alfred Eder | 1989-02-28 |
| 4798689 | Arrangement for controlling a vaporizer by means of pressure fluctuations | Ulrich Heim | 1989-01-17 |