Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867317 | Positioning device | Willi Wildemann, Helmut Morgen, Martin Siemann, Jurgen Kessler, Herbert Freitag | 1989-09-19 |
| 4830432 | Positioning device | Hans-Josef Hosan, Axel Knopp, Gerd Wurges | 1989-05-16 |