Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672303 | Process and extruding head for the manufacture and/or coating of extruding profiles | Burkhard Metzger | 1997-09-30 |
| 5531947 | Process and installation for the manufacture of pencils | Burkhard Metzger | 1996-07-02 |