Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884996 | Elastic coupling with spring guides | Wolfgang Hanke | 1989-12-05 |
| 4838832 | Tooth system for a shaft-hub connection | Wolfgang Hanke | 1989-06-13 |
| 4827937 | Method and apparatus for controlling the operating characteristic quantities of an internal combustion engine | Rolf Kohler, Peter Schmidt | 1989-05-09 |
| 4795980 | Device for monitoring short circuits and overloads in electronic proximity switches | — | 1989-01-03 |