Assignee
Inventors
- Johann Schonberger (3 patents)
- Hermann Pichler (1 patents)
- Rudolf Wolf (7 patents)
- Ewald Romauer (2 patents)
- Franz Nussdorfer (1 patents)
- Franz Zacek (3 patents)
- Franz Fodinger (1 patents)
- Karl Kienesberger (1 patents)
US Patent 4776371 · Granted Oct 11, 1988