Assignee
Inventors
- Albert Van Wijhe (3 patents)
- Ernst Munster (2 patents)
- Gerhard Wagenbrenner (1 patents)
- Fritz Rocker (1 patents)
- Joachim Armbruster (1 patents)
- Klaus Metzger (4 patents)
- Rudiger Ratzel (4 patents)
US Patent 4342934 · Granted Aug 3, 1982