Assignee
Inventors
- Frantisek Ferkl (1 patents)
- Antonin Cap (1 patents)
- Milos Vecera (2 patents)
- Josef Skala (2 patents)
- Vaclav Kopriva (1 patents)
- Michal Blasko (2 patents)
- Karel Pavek (1 patents)
- Milan Chrtek (1 patents)
- Jan Blasko (1 patents)
US Patent 4429522 · Granted Feb 7, 1984