Assignee
Inventors
- Johannes Keck (7 patents)
- Gerd Kruger (12 patents)
- Helmut Pieper (66 patents)
- Klaus Noll (37 patents)
- Gunther Engelhardt (18 patents)
- Norbert Promberger (1 patents)
- Rainer Zimmermann (13 patents)
US Patent 4362738 · Granted Dec 7, 1982