Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880870 | Polymer granulate, a process for its preparation, and its use | Albrecht Harreus | 1989-11-14 |
| 4851189 | Method of manufacturing cams by powder metallurgy | Jurgen Donch, Bernhard Schelb | 1989-07-25 |