Assignee
Inventors
- Joachim Probst (44 patents)
- Walter Schafer (55 patents)
- Klaus Schuster (7 patents)
- Heinrich Alberts (72 patents)
- Hanns P. Muller (146 patents)
- Adolf Schmidt (49 patents)
- Wolfhart Wieczorrek (7 patents)
US Patent 4918135 · Granted Apr 17, 1990