Assignee
Inventors
- Hanns Pietsch (14 patents)
- Karl G. Doppler (1 patents)
- Barbara Krug (6 patents)
- Wolfgang Meyer-Ingold (7 patents)
- Ingrid Wesselkamp (3 patents)
- Volker Hohmann (8 patents)
- Ernst J. Henssge (4 patents)
- Andre Ljutow (1 patents)
US Patent 4902728 · Granted Feb 20, 1990