Assignee
Inventors
- Franz Brandstetter (32 patents)
- Juergen Hambrecht (39 patents)
- Rudolf Stephan (9 patents)
- Heinz-Juergen Overhoff (2 patents)
- Josef Schwaab (5 patents)
- Claus Bernhard (4 patents)
- Johann Swoboda (18 patents)
- Adolf Echte (43 patents)
US Patent 4442263 · Granted Apr 10, 1984