Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838937 | Stabilized alkaline gold bath for the electro-less deposition of gold | — | 1989-06-13 |
| 4831971 | Method for mixing fuel with water, apparatus for carrying out the method and fuel-water mixture | Roland Steinmeier, Werner Zurcher | 1989-05-23 |