Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875787 | Bearing bushing for universal joint pins | Herbert Dobhan | 1989-10-24 |
| 4829962 | Procedure for determining optimum ingnition times with regard to engine operation | Gunther Hafner, Karl-Ernst Noreikat | 1989-05-16 |
| 4806026 | Seal for bearing bushings | Herbert Dobhan | 1989-02-21 |