Assignee
Inventors
- Markus Winterberg (21 patents)
- Walter Luh (5 patents)
- Unknown
- Franz Nierlich (40 patents)
- Stephan Houbrechts (8 patents)
- Dietrich Maschmeyer (47 patents)
- Horst-Werner Zanthoff (20 patents)
- Wilfried Buschken (20 patents)
US Patent 7919662 · Granted Apr 5, 2011