Assignee
Inventors
- Raymond Robinson (4 patents)
- Timothy C. P. Lee (4 patents)
- Peter Endruscheit (3 patents)
- Lothar Hockenberger (5 patents)
- Franz Bergmann (9 patents)
- Karl Ruehl (4 patents)
- Ernst Scherp (4 patents)
US Patent 4897443 · Granted Jan 30, 1990