Assignee
Inventors
- Hugo Beerens (3 patents)
- Hugo Feldmann (20 patents)
- Theodor Gipperich (2 patents)
- Hans-Gerd Kirchhoff (7 patents)
- Siegfried Kusel (1 patents)
- Claus Schlanzke (6 patents)
- Dieter Nobis (11 patents)
US Patent 4505374 · Granted Mar 19, 1985