Assignee
Inventors
- Manfred Lauer (7 patents)
- Matthias Zipplies (21 patents)
- Hubert Sauter (305 patents)
- Barbara A. Moore (2 patents)
- Unknown
- Paul S. Zorner (42 patents)
- Karl-Otto Westphalen (265 patents)
- Bruno Wuerzer (235 patents)
US Patent 4988818 · Granted Jan 29, 1991