Assignee
Inventors
- Juergen Boeckmann (2 patents)
- Bernhard Bruhn (15 patents)
- Harald Hofmann (31 patents)
- Anke Hoejer (1 patents)
- Axel Mikuteit (3 patents)
- Hans-Joachim Ritter (3 patents)
- Rolf Tenhagen (3 patents)
US Patent 4669617 · Granted Jun 2, 1987