Assignee
Inventors
- Urs Gerber (5 patents)
- Erich Gerber (1 patents)
- Peter Hofer (58 patents)
- Erwin Fischer (3 patents)
- Werther Lusuardi (1 patents)
- Walter Gysel (3 patents)
- Roland Baggi (1 patents)
- Eduard Rogg (1 patents)
- Karl Gut (8 patents)
US Patent 4665794 · Granted May 19, 1987