Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943161 | Method and apparatus for the detection of hydrocarbons dissolved in bodies of water | Walfried Michaelis | 1990-07-24 |
| 4204908 | Method of identifying leaky components of a multi-component system | Walfried Michaelis | 1980-05-27 |