Assignee
Inventors
- Rudolf Beier (18 patents)
- Peter Amborn (22 patents)
- Wolfgang Exner (1 patents)
- Herbert Frielingsdorf (14 patents)
- Klaus Greulich (11 patents)
- Joachim Altdorf (5 patents)
- Ivan Rericha (1 patents)
US Patent 5243880 · Granted Sep 14, 1993