Assignee
Inventors
- Jan Junek (3 patents)
- Josef Skarka (1 patents)
- Frantisek Jaros (6 patents)
- Frantisek Hortlik (5 patents)
- Kveta Hacova (2 patents)
- Vaclav Vobornik (2 patents)
- Vladimi Ohlidal (1 patents)
- Ludmila Lihtarova (3 patents)
US Patent 4499718 · Granted Feb 19, 1985