Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5022956 | Producing viaholes in plastic sheets and application of the method | Ulrich Kuenzel, Wolf-Dieter Ruh | 1991-06-11 |
| 4834835 | Producing viaholes in plastic sheets and application of the method | Ulrich Kuenzel, Wolf-Dieter Ruh | 1989-05-30 |