Assignee
Inventors
- Max Greiner (19 patents)
- Udo Hafner (56 patents)
- Waldemar Hans (46 patents)
- Heinrich Knapp (54 patents)
- Wolfgang Kramer (26 patents)
- Rudolf Krauss (32 patents)
- Ferdinand Reiter (108 patents)
- Peter Romann (43 patents)
- Unknown
US Patent 4813599 · Granted Mar 21, 1989