Assignee
Inventors
- Fritz Engelhardt (34 patents)
- Karl-Heinz Keil (28 patents)
- Jurgen Kuhlwein (6 patents)
- Wilfried Schuler (5 patents)
- Willi Steckelberg (16 patents)
- Ralf Zerrer (8 patents)
- Werner Antwerpen (4 patents)
US Patent 5492995 · Granted Feb 20, 1996