Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859438 | Method for separation of impurities from flowing gas | Ralf Lindbauer | 1989-08-22 |
| 4839147 | Method of purifying combustion product gases contaminated with dust and noxious gases | Ralf Lindbauer | 1989-06-13 |