Assignee
Inventors
- Klaus Hinselmann (4 patents)
- Herbert Naarmann (72 patents)
- Adolf Echte (43 patents)
- Eduard Heil (4 patents)
- Albert Nikles (2 patents)
- Rudi W. Reffert (7 patents)
- Juergen Hambrecht (39 patents)
US Patent 4436870 · Granted Mar 13, 1984