Assignee
Inventors
- Petra Aval (1 patents)
- Thomas Bohnen (2 patents)
- Michael Geier (12 patents)
- Ralf Graute (1 patents)
- Hans-Joachim Kannengiesser (1 patents)
- Edeltraud Meyer (1 patents)
- Karsten Scharnweber (1 patents)
US Patent 6554471 · Granted Apr 29, 2003