Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793135 | Method of detoxification of exhaust gas from an internal combustion engine using a catalytic system, and apparatus for performing the method | Matthias Obstfelder, Gunther Obstfelder | 1988-12-27 |