Assignee
Inventors
- Dieter Gerke (27 patents)
- Wilhelm Bramkamp (2 patents)
- Gunter Hegner (17 patents)
- Lutz Biederstedt (12 patents)
- Robert A. Williams (66 patents)
- Manfred Muller (86 patents)
- Wolfgang Radelow (8 patents)
US Patent 4973262 · Granted Nov 27, 1990