Assignee
Inventors
- Helmut Dressler (2 patents)
- Peter Engenhart (1 patents)
- Klaus Jahnel (4 patents)
- Heinrich Kochendorfer (6 patents)
- Ulrich Kuhn (20 patents)
- Karl H. Matthas (1 patents)
- Kurt Schuster (17 patents)
US Patent 4635173 · Granted Jan 6, 1987