Assignee
Inventors
- Dietrich Erdmann (9 patents)
- Max E. Van Ghemen (6 patents)
- Ludwig Pohl (59 patents)
- Herbert Schumann (14 patents)
- Uwe Hartmann (5 patents)
- Wilfried Wassermann (5 patents)
- Meino Heyen (6 patents)
- Holger Jurgensen (25 patents)
US Patent 4880492 · Granted Nov 14, 1989