Assignee
Inventors
- Martin Foerster (18 patents)
- Ewald Dittrich (5 patents)
- Gerhard Birtigh (7 patents)
- Walter Leibold (2 patents)
- Bernd Mergner (5 patents)
- Michael Hoffmann (4 patents)
- Wolfgang Hasselmann (8 patents)
- Robert Schafer (9 patents)
US Patent 6149973 · Granted Nov 21, 2000