Assignee
Inventors
- Lothar Formanek (6 patents)
- Martin Hirsch (50 patents)
- Wolfram Schnabel (19 patents)
- Harry Serbent (17 patents)
- Klaus-Dietrich Fritzsche (2 patents)
- Heribert Koenig (5 patents)
- Detmar Arlt (1 patents)
US Patent 4490168 · Granted Dec 25, 1984