Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5406881 | Apparatus for a dealcoholizing plant | Horst Petershans | 1995-04-18 |
| 4656870 | Ultrasonic testing device | Klaus Ruthrof, Georg Holzler | 1987-04-14 |
| 4642417 | Concentric three-conductor cable | Klaus Ruthrof, Jurgen Dorner | 1987-02-10 |