Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958251 | Method of and apparatus for the purification of gases and liquids | Karl Przybilla | 1999-09-28 |
| 5157547 | Transparent coating having a medium refractivity | — | 1992-10-20 |