Assignee
Inventors
- Janos Fischer (12 patents)
- Unknown
- Mihaly Major (1 patents)
- Elemer Ezer (29 patents)
- Judit Matuz (17 patents)
- Katalin Saghy (16 patents)
- Gyorgy Hajos (46 patents)
- Laszlo Szporny (111 patents)
US Patent 4879404 · Granted Nov 7, 1989