Issued Patents All Time
Showing 126–127 of 127 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4220751 | Preparation of soft and hard resins, and their use | Harro Petersen, Hans-Joachim Klug, Werner Trimborn | 1980-09-02 |
| 4188864 | Electric coffee or tea maker | — | 1980-02-19 |