Assignee
Inventors
- Friedrich Ertingshausen (2 patents)
- Volker Heinrich (8 patents)
- Holger Hinkel (14 patents)
- Gerhard Kaus (5 patents)
- Jurgen Kempf (5 patents)
- Hans-Georg Nauth (1 patents)
- Manfred Schrader (1 patents)
US Patent 4549238 · Granted Oct 22, 1985