Assignee
Inventors
- Matthias Zipplies (21 patents)
- Hubert Sauter (305 patents)
- Franz Roehl (37 patents)
- Thomas Kuekenhoehner (63 patents)
- Lothar Janitschke (15 patents)
- Eberhard Ammermann (454 patents)
- Gisela Lorenz (377 patents)
US Patent 4935426 · Granted Jun 19, 1990