Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4652477 | Covering material | Stefan Rindfleisch | 1987-03-24 |
| 4497120 | Procedure and apparatus for charging and emptying the drying trays in a drying box | Fritz Laemmermann, Wolfgang Fabian, Rudolf Polster | 1985-02-05 |