Assignee
Inventors
- Walter Benedikt (26 patents)
- Gerhard Heess (12 patents)
- Werner Herden (85 patents)
- Karl-Hermann Friese (74 patents)
- Helmut Reum (7 patents)
- Jurgen Schmatz (6 patents)
- Siegbert Schwab (4 patents)
US Patent 4798991 · Granted Jan 17, 1989