Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846759 | Device for reducing engine-excited vibrations of a drive train, especially a split flywheel | Gunter Worner, Ernest Tscheplak | 1989-07-11 |
| 4823549 | Apparatus for collecting soot from exhaust gases of an air-compressing, self-igniting internal combustion engine | — | 1989-04-25 |