Assignee
Inventors
- Unknown
- Jozsef Sos (6 patents)
- Ferenc Kovats (5 patents)
- Istvan Petroczi (1 patents)
- Gyorgy Kis (13 patents)
- Jozsef Karsai (3 patents)
- Sandor ngyan (6 patents)
- Istvan Racz (11 patents)
- Katalin Marmarosi (13 patents)
US Patent 4761423 · Granted Aug 2, 1988