Assignee
Inventors
- Ludwig Kreitner (8 patents)
- Werner Grau (26 patents)
- August Lehner (45 patents)
- Hans Reichert (1 patents)
- Friedrich Sommermann (7 patents)
- Norbert Schneider (89 patents)
- Gerd Erhardt (1 patents)
US Patent 5082689 · Granted Jan 21, 1992